Trollathon #3.1 : Think Again.

Level pending

What is the value of 1 + 1 1 + 1 ?


The answer is 2.

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9 solutions

Swapnil Rajawat
Apr 7, 2014

First draw one line on a paper and beside it draw one more line. Now count both of them together u will get 2.That's the answer.

Woah. That's intense. :O

Finn Hulse - 7 years ago

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Check out my solution. It's super intensive.

Sharky Kesa - 7 years ago

here we go !!! 1 = 1 1 2 = 1 × 1 1 2 1 2 = 1 × 1 1 2 ( 1 + 1 ) ( 1 1 ) = 1 ( 1 1 ) c a n c e l l i n g ( 1 1 ) a n d w e g e t 1 + 1 = 1 h e y F i n n i g o t 1 + 1 = 1 1=1\\ { 1 }^{ 2 }=1\times 1\\ { 1 }^{ 2 }-{ 1 }^{ 2 }=1\times 1-{ 1 }^{ 2 }\\ (1+1)(1-1)=1(1-1)\\ cancelling\quad (1-1)\\ and\quad we\quad get\quad 1+1=1\\ hey\quad Finn\quad i\quad got\quad 1+1=1 what should i do

just kidding here this is taken from Sharky's note .

Rishabh Jain - 7 years ago

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You're awesome! :D

Oindrila Banerjee - 5 years, 10 months ago

You know why it 'works'. Cuz you just divide by 0 (See cancelling 1-1). AND if that is true, math breaks and everything does not make sense

Mohammad Farhat - 2 years, 10 months ago
Zi Song Yeoh
Apr 4, 2014

This is obvious and doesn't require any explanation.

"THINK AGAIN'

Hoo Zhi Yee - 7 years, 2 months ago

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This is because of the lame trick young children have about 1+1 being 11. Thus this problem is directed towards young kids, telling them to think again.

Joshua Ong - 7 years, 2 months ago

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i think people using this site are not that young that they should be taught that 1+1=2 and not 11

krunal shah - 6 years, 11 months ago

This problem does not live up to trollathon's reputation... :p

Eddie The Head - 7 years ago

I thought that since it's a troll, the + + symbol here denoted the logic symbol of OR gate and so I answered 1 + 1 = 1 1+1=1 at first. :P

Prasun Biswas - 6 years, 5 months ago
Sharky Kesa
May 22, 2014

This is how I solved it but it requires an intensive amount of math knowledge.

Let's say 1 + 1 = n 1+1=n . n n has to be positive. Then 1 = n 1 1=n-1 . Squaring it, we get 1 = n 2 2 n + 1 1=n^2-2n+1 . 0 = n 2 2 n . 0 = n ( n 2 ) 0=n^2-2n. 0=n(n-2) . Since we want a positive number, n = 2 n=2 .

Therefore 1 + 1 = 2 1+1=2 (mind blow!)

1 in the mind 1 in the finger after one 2.So 2 is the answer. 1+1=2 i have one chocolate if i get another there will be two. Is this explanation enough.If anyone can't understand you can ask for explanation again

OK it took a while but I think I got it. First start with the normal construction of the natural numbers. 0 = 0=\varnothing and define the successor operation : N N ':\Bbb N \to \Bbb N such that ( A ) = { A } A (A)'=\{A\}\cup A . By the axiom of infinity this can be applied as many times as we like. Now we find that 1 = { , { } } 1=\{\varnothing,\{\varnothing\}\} and addition by one is the same as succession therefore the answer is 1 = { { { , { } } } , { , { } } } = 2 1'=\{\{\{\varnothing,\{\varnothing\}\}\},\{ \varnothing,\{\varnothing\}\}\}=\boxed{2} .

Some day, I will understand your notation. And in that moment, I shall be euphoric.

A Former Brilliant Member - 6 years, 11 months ago

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I now understand your notation, and past me was correct, I am euphoric.

WHY MAKE SUCH AN EASY QUESTION SO DIFFICULT?!

Yoogottam Khandelwal - 6 years, 1 month ago
Mehdi Balti
Oct 7, 2015

Hahaha so I again think

Count your fingers..two stick out..by the way, only 92% people got this right!

Kyle Chui
Dec 15, 2014

Holy moly I thought this was a trick question lol

i too thought the same and answered as 11!

vishwathiga jayasankar - 6 years, 5 months ago
Anvit Tyagi
May 25, 2014

so simpleeeeeeeeeeee.................................

I got this wrong :/

Cedric Tan - 6 years, 10 months ago

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wow may i know what answer you gave

vishwathiga jayasankar - 6 years, 5 months ago

cedric..please please please teach me how to go wrong in this

Yoogottam Khandelwal - 6 years, 1 month ago

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