r/LearnUselessTalents • u/rainbow_leep21 • 1d ago

r/LearnUselessTalents • u/Honest-Win5881 • 1d ago

## Can girls/women burp intentionally?

Im just genuine curious, because my friends that are girls say they can't and my homies and me can burp intentionally

r/LearnUselessTalents • u/_L75 • 6d ago

## Trynna be ambidextrous.

Hello, I'm trying to be ambidextrous for writing with both hands at once. Any tips to help me out? I can pen spin with both of my hands and write slightly & very slowly with my left hand. I'm right handed btw. So, how can I write with my both hands at once also learn to write with my left hand first! Ty in advance...

r/LearnUselessTalents • u/dr_hayzoos • 7d ago

## How do I whistle like this guy?

I just think it’s a pretty cool whistle and wanna learn it

r/LearnUselessTalents • u/Frequent_Bread1170 • 8d ago

## How can I memorize this fast?

To be sincerely honest, in my humble opinion, without offending anyone who thinks differently, and without hiding any thoughts in my mind or telling lies, to speak the actual truth with a clear, open mind and a clean heart, expressing what I've been holding back for a long time, which I didn’t say because I was nervous — today, by gathering all the courage and motivation, I just want to say that I actually feel and think that I have absolutely nothing to say 🏃🏃🏃

I stole this from a comment on a manhwa. I want to memorize it so that when I meet someone who speaks English, I can say this.

r/LearnUselessTalents • u/VeryLongTentacle • 11d ago

## whenever i wink, my other eye almost closes and the eyebrow raises a lot and overall it just doesn’t look good at all. is there a way i can teach myself to wink better (like this)?

r/LearnUselessTalents • u/jusper50 • 11d ago

## DIY Beautiful Xmas Ornaments || Handmade Crafts For Christmas Tree Decorations

r/LearnUselessTalents • u/books_cats_please • 13d ago

## An idiot's guide to number systems (binary, ternary, hex, etc. and fractional numbers)

I’ve met a lot of people who are convinced they can’t learn binary let alone any other number system. They see numbers and math and immediately feel overwhelmed.

I understand that response as I myself am not particularly smart. I struggle to do simple arithmetic without my fingers or a pencil and paper. So, if I can learn this, truly anyone can.

Early in our education most of us learn about number places: the ones place, the tens place etc. Even though we learn this and pass all our tests and can count from one to infinity – most of us never actually understood what we were being taught. If we did, we would all be able to figure out binary, ternary, base four, and every other number system with relative ease.

I think the problem is that the base ten number system is so natural to us that understanding the system behind it isn’t necessary, and in reality few ever need to understand anything beyond base ten. But, I’m going to explain how number systems work anyways because I think it's kind of fun.

For those who get overwhelmed by math I’m going to start with a binary system that doesn’t use numbers.

If you want to skip this method of learning binary, or go straight to the math, scroll to the line break.

Let’s start with a binary system we are all familiar with: yes and no.

Pretend we work together. Every day you walk into the office I ask you the same three questions, in the same order:

Do you want coffee? | Do you want cream? | Do you want sugar? |
---|

Every day you walk in anticipating these three questions in this same exact order.

Let’s say the first time you answer:

Do you want coffee? | Do you want cream? | Do you want sugar? |
---|---|---|

Yes | Yes | Yes |

The next day you answer:

Do you want coffee? | Do you want cream? | Do you want sugar? |
---|---|---|

Yes | No | No |

On another day you respond: (I still ask the questions in full)

Coffee | Cream | Sugar |
---|---|---|

Yes | No | No |

Eventually, we get to the point where I don’t even need to ask, you just come in and hold up three fingers and I know you want coffee with cream and sugar. One finger up means a black coffee. Your pointer and ring finger up with your middle finger down would mean yes to coffee, no to cream, and yes to sugar. You flipping me off would mean you just want cream – no coffee and no sugar.

I know that a finger up means yes, and a finger down means no. You know that I only ask those same three questions, in the exact same order every time.

This system works because you and I both know what the questions, and the only suitable answers are.

Let’s look at this system with zeros and ones.

Zero means “no”, and one means “yes”.

A black coffee would be a 100:

Coffee | Cream | Sugar |
---|---|---|

1 | 0 | 0 |

A Michael Scott special (just cream and sugar) would be an 11:

Coffee | Cream | Sugar |
---|---|---|

0 | 1 | 1 |

A coffee with cream and no sugar would be a 110:

Coffee | Cream | Sugar |
---|---|---|

1 | 1 | 0 |

If that all makes sense, then believe it or not you understand binary, congrats!

The only difference between that example and computer binary, are what the values of the “questions” are.

In binary we replace the questions with numerical values (powers of 2, which I’ll explain more below). If there is a one under the value, then it gets added up with every other value that has a one underneath it. Once you’ve added up all the values, you have your decimal number!

So instead of coffee, we have 4. Instead of cream, we have 2. And instead of sugar, we have 1.

4 | 2 | 1 |
---|

So for the binary number 101, you add up 4 + 1.

4 | 2 | 1 |
---|---|---|

1 | 0 | 1 |

4 + 0 + 1

So, the binary number 101 is equal to the base ten (decimal) number 5. It’s that easy!

Now on to other number systems. This will involve much more math, but it’s all very simple and you are allowed to use a calculator.

When we think of the number 300, we don’t think about the three in the hundreds place instructing us to add up 100, three times. When we think of 42, we don’t see four values of 10 and two values of 1. We don’t have to calculate it because it’s already a decimal. But in every other number system, we have to do some calculations to convert the numbers to decimal. Looking at number systems other than decimal helps to better understand this process, but first you need to know how all number systems fundamentally work.

For every number system we need to know the digits used, and the place values.

First, the digits used:

In binary (base 2) you have two digits to make every number in that system: 0 and 1.

In ternary (base 3), you have three digits: 0, 1, and 2.

The digits used in every number system start with 0, so base ten isn’t 1 – 10, its 0 – 9.

In a number system that uses more than ten digits, we have to borrow letters from the alphabet to use as single digits beyond 9.

So, a base eleven number system uses digits 0 – a (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a) where the letter “a” has a numerical value of 10.

Hexadecimal (base 16) uses 0 – f, with “f” having a numerical value of 15.

You might wonder why we can’t just use the numbers 10 and 15 to represent digits over 9. Why do we have to use letters? The short answer is that digits have to be single characters. The longer answer involves understanding how digits are used with place values.

So, on to place values:

To find the value of each number place, we calculate the powers of however many digits are used in that number system.

You start with the zero power furthest to the right, and move up a power for each new place value in the number system.

Any number to the zero power is one, so every number system starts with a ones place.

For example, the ones place in decimal (base 10) is actually 10^{0,} the tens place is 10^{1,} the hundreds place is 10^{2,} and so on.

10^{7} |
10^{6} |
10^{5} |
10^{4} |
10^{3} |
10^{2} |
10^{1} |
10^{0} |
---|

This is equal to:

10,000,000 | 1,000,000 | 100,000 | 10,000 | 1,000 | 100 | 10 | 1 |
---|

For binary:

2^{7} |
2^{6} |
2^{5} |
2^{4} |
2^{3} |
2^{2} |
2^{1} |
2^{0} |
---|

is equal to:

128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
---|

In ternary (base 3) it’s powers of 3, and in hexadecimal (base 16) it’s powers of 16. If you’re like me and you suck at doing multiplication, don’t let this deter you, just use a calculator.

Once you know the place values and the digits used, you can convert to decimal with simple addition. The digit in each place value tells you how many times to add that value into the decimal total. So a 3 in the ones place for a hexadecimal number, means you add 1 + 1 + 1 – just like a 3 in the tens place for a base ten number means you add up 10 + 10 + 10.

Here are some examples.

The binary number 101 = 4 + 1:

128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |

Decimal = 5

The ternary number 101 = 9 + 1:

2187 | 729 | 243 | 81 | 27 | 9 | 3 | 1 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |

Decimal = 10

The ternary number 210 = 9 + 9 + 3:

2187 | 729 | 243 | 81 | 27 | 9 | 3 | 1 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 |

Decimal = 21

The hexadecimal number 2a3 = 256 + 256 + 16 + 16 + 16 + 16 + 16 + 16 + 16 + 16 + 16 + 16 + 1 + 1 + 1

Or 2a3 = (256 * 2) + (16 * 10) + (1 * 3)

(Remember that “a” has a numerical value of 10):

256 | 16 | 1 |
---|---|---|

2 | a | 3 |

Decimal: 675

This is why letters are used to represent digits over 9. The hexadecimal number 2103 converts to the decimal number 8,451, not 675. We need a single character digit that tells us there are 10 total place values of 16 in the hexadecimal number.

Hopefully that wasn’t too confusing, and if you understood it than congratulations you now understand how every number system works (mostly)!

If you want to leave now, I don’t blame you, but I would encourage you to go on so that you understand how number systems work with fractions. I promise, it’s not as scary as it sounds!

Fractions:

If calculating the place values for whole numbers is just powers of the base, then calculating the place values for fractional numbers is the same – only it’s done with negative exponents (powers).

Let’s look at the base ten number 0.25.

The ones place in every number system is (x^{0}), but we are looking at numbers less than 1, so on the other side of the decimal point we will start with (10^{-1}).

10^{3} |
10^{2} |
10^{1} |
10^{0} |
. | 10^{-1} |
10^{-2} |
10^{-3} |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 2 | 5 | 0 |

To get rid of the negative exponent, you turn it into a fraction (1/(10^{1})). So the first value place after the decimal point in a base ten number is the 1/10 place. The next value place is (10^{-2}), or 1/100.

1000 | 100 | 10 | 1 | . | 1/10 | 1/100 | 1/1000 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 2 | 5 | 0 |

In our number 0.25 we have a 2 in the 1/10 place, and a 5 in the 1/100 place. So we add:

(1/10) + (1/10) + (1/100) + (1/100) + (1/100) + (1/100) + (1/100)

In case you aren’t familiar with adding fractions, to add these we need to find a common denominator. In this case it’s always going to be the biggest denominator, no matter what number system it is.

So we multiply the top and bottom of the first two fractions by 10, then we can add all the fractions together. What we end up with is:

(10/100) + (10/100) + (1/100) + (1/100) + (1/100) + (1/100) + (1/100) = 25/100

(Just add up the top numbers like usual, and place the total over the common denominator)

25/100 is 0.25…

That’s a lot of work for something that was already calculated, but the process is important to learn. So now that you know the process let’s look at a fractional binary number.

Binary number 0.11:

The place values after the decimal are (2^{-1}) and (2^{-2})

2^{3} |
2^{2} |
2^{1} |
2^{0} |
. | 2^{-1} |
2^{-2} |
2^{-3} |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 1 | 1 | 0 |

or (1/2) and (1/4)

8 | 4 | 2 | 1 | . | 1/2 | 1/4 | 1/8 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 1 | 1 | 0 |

To convert our fractional binary number to decimal we add up one value of (1/2) and one value of (1/4).

(1/2) + (1/4) = (2/4) + (1/4) = (3/4) or .75

The binary number 0.11 converts to the decimal .75

Let’s try ternary and hex:

The ternary number 0.11 converts to the decimal number 4/9:

(1/3) + (1/9) = (3/9) + (1/9) = 4/9

3^{3} |
3^{2} |
3^{1} |
3^{0} |
. | 3^{-1} |
3^{-2} |
3^{-3} |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 1 | 1 | 0 |

27 | 9 | 3 | 1 | . | 1/3 | 1/9 | 1/27 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 1 | 1 | 0 |

The hexadecimal number 0.11 converts to the decimal number 17/256:

(1/16) + (1/256) = (16/256) + (1/256) = 17/256

16^{3} |
16^{2} |
16^{1} |
16^{0} |
. | 16^{-1} |
16^{-2} |
16^{-3} |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 1 | 1 | 0 |

4096 | 256 | 16 | 1 | . | 1/16 | 1/256 | 1/4096 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | 1 | 1 | 0 |

Let’s try with digits over 9:

The hexadecimal number .a1 converts to the decimal number 161/256:

((1/16)*10) + (1/256) = (10/16) + (1/256) = (160/256) + (1/256) = (161/256)

16^{3} |
16^{2} |
16^{1} |
16^{0} |
. | 16^{-1} |
16^{-2} |
16^{-3} |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | a | 1 | 0 |

4096 | 256 | 16 | 1 | . | 1/16 | 1/256 | 1/4096 |
---|---|---|---|---|---|---|---|

0 | 0 | 0 | 0 | . | a | 1 | 0 |

And that’s it, or at least all I know!

Hope you learned something, even if it's useless.

r/LearnUselessTalents • u/Brick-Brick- • 13d ago

## Free beginner CAD courses through the month of october every Sunday at 10am Pacific time

r/LearnUselessTalents • u/Sleak_ • 13d ago

## Chugging a beer by blocking throat ?

Hey, I’m member of a student club in Belgium and I love chugging people all around me in events. The problem is that I can only drinking my beers fast ! Which is good and bad at the same time, I would say “middle”.

Thus I’m here to ask you some tips to have this effect of pouring the beer/water directly to my stomach within 2 secondes and improve my skills.

What about the blocked throat ? Thanks ! :)

r/LearnUselessTalents • u/Lazy_Drive_2297 • 15d ago

## Piano or violin?

I’m a teenager and lately I have been fascinated by music! I thought it would go away because I’m scared it would be just a phase and I would beg my parents to spend money for classes or instruments and a couple of weeks later it’s dead to me. I have been feeling this strong emotion for at least 5 months. So I asked them if I can take a class. They agreed! The only thing now is that I am fascinated by both piano and violin. I have access to a piano. The thing is there is not enough space to put it in a decent area. And I have played 2 songs on piano before! (although that was 7 years ago😅)That means if I take classes for piano, the only thing we would have to worry about is making it fit somewhere. Then there is violin. I don’t think even ever touched one, but it is more transportable and I’m pretty sure you can play it almost anywhere you want? Also, which one is better to learn in general? Is one easier to learn or does one of them have more mental health benefits like improved memory?

Edit: please ignore that I put this as useless talent I wasn’t that aware of how many benefits music has besides those who do it as a career. I now know, I was thinking stupid

r/LearnUselessTalents • u/Sleak_ • 13d ago

## Help me doing this trick.

Yo, does anyone know how to take my eyes out like Mr. Krabs and put them back in? You know, like in the meme.

r/LearnUselessTalents • u/shslsquirrel • 16d ago

## How to sleep with a lot of stuffed animals w/o them falling off the bed

I hope this counts...? I am an adult who sleeps with a LOT of toys. I just wanna have my little guys with me when I sleep man 🥺!! And well because of that I had to experiment with ways to get them to stop falling off the edges. I found something that works, since now my toys don't really ever fall off my bed!

So the first thing that you want is two pillows to serve as "walls" (or if all your toys are on one side, just one pillow). They should probably be big and/or fluffy ones. Then via just eyeballing it, line the average sized toys beside these pillows, and take toys small enough to fit in gaps (between the toy's arms and legs, etc.) and tuck them in. Then lay the rest of the small toys on top of them, and finally lay the larger toys on top of all of them! If you have so many toys that they go past your pillow(s), I've found that they actually don't fall as much the closer they get to the bottom of the bed, so it's probably not anything to worry about. However, you can sorta hold some between your legs if you want! Just make sure, if possible, the toys near the end if the bed aren't small ones. They have a 70% chance of getting lost somehow, believe me HAHA...

I guess I'm just sort of hoping this inspires people to embrace the joyous whimsy that is sleeping with stuffed animals by posting this :]? I dunno, but yeah either way here is my useless skill 👍

r/LearnUselessTalents • u/J3P7 • 17d ago

## Not many people will pay for a custom hand-bound book so it's a little useless but still a tonne of fun!

r/LearnUselessTalents • u/Impressive-Wasabi857 • 19d ago

## I am trying to become ambidextrous to help with my piano playing, any tips?

Eeye

r/LearnUselessTalents • u/jusper50 • 18d ago

## Beautiful Christmas Ornaments || DIY Xmas Ball Making || Handmade Crafts For Christmas Tree Decorations

r/LearnUselessTalents • u/woospers • 19d ago

## Mastering Brand Strategy: Your Roadmap for Business Growth

r/LearnUselessTalents • u/Brilliant-Zucchini50 • 20d ago

## Learn How To Do Blixa Bargeld's dying cats scream

I want to learn how to do the scream in this video. He also has an extremely deep voice and can't sing high so this is not a vocal range issue.

https://www.youtube.com/watch?v=KVFDSP0IsY4&ab_channel=PatientenO.T.

r/LearnUselessTalents • u/Yarokrma • 21d ago

## Best Techniques for Memorizing City Data: Population, Area, GDP, and Density on a Map

What are the most effective strategies for memorizing a list of 82 cities along with their population sizes, area numbers, GDP, and population density, especially when visualizing them on a map

r/LearnUselessTalents • u/inChicagoNowiguess • 22d ago

## How do you get a ‘guy’ for things?

People on shows always go “I got a beef guy,” or “I’ve got a snake guy” how do people find specific people to hook them up for stuff?

r/LearnUselessTalents • u/Creepy_Election_4036 • 22d ago

## How can I learn to burp loud on command?

Are there any men or women that are capable of burping loud and that can explain me?

r/LearnUselessTalents • u/jusper50 • 22d ago

## Handmade Christmas Snowflake || Easy & Quick Crafts For Xmas Decorations

r/LearnUselessTalents • u/Equivalent_Print2113 • 25d ago

## People that can chug in one gulp, how long did it take you to learn this?

just curious, wanted to learn it for like a month but still cant(