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

Let m=t a n3\ a n d\ n=s e c6,\ then which of the following statement(s) does/do not hold goods? (a). m\ &\ n\ both are positive (b). m\ &\ n both are negative (c). m is positive and n is negative (d). m is negative and n is positive

Which of the following is a quadratic equation? a) n^2-n+4=n^2 b) x^2=8 c) y^3=0 d)None of these

The sum of first n odd natural numbers is 2n-1 (b) 2n+1 (c) n^2 (d) n^2-1

The sum of first n odd natural numbers is 2n-1 (b) 2n+1 (c) n^2 (d) n^2-1

Number of non - negative integral solutions of a+b+c+d=n,n in N, is :

Let A={1,\ 2,\ ,\ n} and B={a ,\ b} . Then the number of subjections from A into B is \ ^n P_2 (b) 2^n-2 (c) 2^n-1 (d) \ ^n C_2

The mean of first n odd natural number is (a) (n+1)/2 (b) n/2 (c) n (d) n^2

The mean of first n odd natural number is (a) (n+1)/2 (b) n/2 (c) n (d) 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