Perfect Pair Problem in HackerBlocks

#1

Find the number of pairs (a,b) in given set of n integers such that (a&b)=0.
Input:5
41 47 34 40 29
output:5

Please tell how 5 can be answer because there is not set which is zero if we do and operation like

#2

@ashwani225
Could you plz provide me link of this question.

#3

https://hack.codingblocks.com/app/practice/5/995/problem

#4

There is some issue with this question. Sample testcase is not clear. I’ll ask the problem setter and let you know.

#5

Okay Thanks.Let me know the update

#6

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