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If the variance of first n natural numbers is 2 and the variance of first m odd natural numbers is 40, then m+n = |
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Answer» variance of first m ODD natural numbers is `2^2 ((m^2-1))/12=40 rArr (m^2-1)/12=10` `rArr m^2-1 =120 rArr m^2=121 rArr` m=11 |
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