If the sum of n positive number is 2n, then the product of these numbers is (A) `le2^n` (B) `ge2^n` (C) divisible by `2^n` (D) none of these

If the product of n positive numbers is n^(n) . Then their sum is

If the product of n positive numbers is n^n , then their sum is (a)a positive integer (b). divisible by n (c)equal to n+1//n (d)never less than n^2

The product of n positive numbers is unity, then their sum is (1991,2M) a positive integer (b) divisible by n equal to n+(1)/(n) (d) never less than n

The number of terms in the expansion of (x+1/x+1)^n is (A) 2n (B) 2n+1 (C) 2n-1 (D) none of these

If n is a negative number then which of the following is the least? 0 (b) n(c)2n (d) n^(2)

In n is an even number, then the largest natural number by which n(n+1)(n+2) is divisible is

If n is an even natural number, then the largest natural number by which n(n + 1)(n + 2) is divisible, is

If m and n are positive integers and (m – n) is an even number, then (m^(2) - n^(2)) will be always divisible by