Problem 3 Maths quiz

#1

Can you please help me out with this problem?

#2

hello @himanshugupta8 what is the problem ?

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#3

@himanshugupta8 i would be able to help you in the better way if you could give the problem link here .

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#4

https://online.codingblocks.com/app/player/153748/content/165110/6855/quiz/39/s/119824?q=3

#5

there is nothing in the link .
i think it is your portal question so you can share the screenshot .

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#6

Screenshot (183)
Screenshot (183)1366×768 99.8 KB

#7

hey @himanshugupta8 let’s consider we have 6 numbers and out of which take two numbers say a and b ,consider we need to have (a-b) as a multiple of 5 i.e (a-b)%5 =0 this implies (a%5-b%5)=0
i.e. a%5 =b%5 ; this means that out of 6 numbers we have to find the probablity that any two number has same value%5 ,possible values of anyvalue%5 is 0,1,2,3,4 and we have 6 numbers so according to pigeon hole principal we are bound to have two numbers with same value%5,
thus the answer should be 1.
if you have doubt in any point you can ask here .
and if your doubt is resolved please mark this doubt as resolved .
Happy Learning !!

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#8

@himanshugupta8 so according to the options ‘D’ is the correct option .

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#9

Thanks… I got it.
But can you please tell that don’t we have to find the probability of number of pairs for which their difference is multiple of 5?

#10

I misinterpret the question…But do you know how to find the probability of number of pairs for which their difference is multiple of 5?

#11

hey @himanshugupta8 yes you have interpreted it in the wrong way .

#12

if you feel that your doubt is cleared please mark this doubt as resolved .