The variance of 10 natural numbers 1,1,1,1 ... k is less then 10 . Find maximum value of k

Find the Variance of First 10 Natural Numbers.

If the variance of first lambda + 1 natural numbers is 10 and variance of the first mu - 2 even natural numbers. is 16 then lambda + mu

If variance of first n natural number is 10 and variance of first m even natural number is 16 then the value of m+n is

If k,k+1,k+3 are in G.P then find the value of k

Variance of 1st 10 natural nos. is m & mean of first 10 odd natural number in n then m/n is

If k, k + 1 and k + 3 are in G.P. then find the value of k.

If k_1 and k_2(k_2

If the sum 1+2+3.....+k is a perfect square N^(2) and if N is less than 300, then find the number of values of k