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 1, then their sum is

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

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

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

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 A=[(1,1),(1,0)] and n epsilon N then A^n is equal to (A) 2^(n-1)A (B) 2^nA (C) nA (D) none of these

n is selected from the set {1, 2, 3,.............,100} and the number 2^n+3^n+5^n is formed. Total number of ways of selecting n so that the formed number is divisible by 4 is equal to (A) 50 (B) 49 (C) 48 (D) None of these.

For all natural number of n, 2^(2n).3^(2n)-1-35n is divisible by

If S_r denotes the sum of the first r terms of an A.P. Then, S_(3n)\ :(S_(2n)-S_n) is n (b) 3n (c) 3 (d) none of these