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Out of 25 consecutive natural numbers, t...

Out of `25` consecutive natural numbers, two numbers can be chosen in `lambda` ways such that their "sum" is divisible by `2`. Then `lambda//36` is.

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The correct Answer is:
4
Out of `25` consecutive ………..
`lambda = ^(12)C_(2)+ ^(13)C_(2) = 144`
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