The value of `i^(1+3+5+...+(2n+1))` is (1) i if n is even, -i if n is odd (2) 1 if n is even, -1 if n is odd (3) 1 if n is odd, -1 if n is even (4) none of these

The value of i^(1+3+5+...+(2n+1)) is (1) if n is even,-i if n is odd (2)1 if n is even -1 if n is odd (3)1 if n is odd -1 if n is even (4) none of these

If A=[2-1 3-2] , then A^n= [1 0 0 1] , if n is an even natural number (b) [1 0 0 1] , if n is an odd natural number (c) [-1 0 0 1] , if n in N (d) none of these

Number of ways in which three numbers in A.P. can be selected from 1,2,3,..., n is a. ((n-1)/2)^2 if n is even b. n(n-2)/4 if n is even c. (n-1)^2/4 if n is odd d. none of these

Number of ways in which three numbers in A.P. can be selected from 1,2,3,..., n is a. ((n-1)/2)^2 if n is even b. n(n-2)/4 if n is even c. (n-1)^2/4 if n is odd d. none of these

Number of ways in which three numbers in A.P.can be selected from 1,2,3,...,n is a.((n-1)/(2))^(2) if n is even b.n(n-2)/(4) if n is even c.((n-1)^(2))/(4) if n is odd d.none of these

Number of ways in which three numbers in A.P. can be selected from 1,2,3,..., n is a. ((n-1)/2)^2 if n is even b. ((n-2)/4)^ if n is even c. ((n-1)/4)^2 if n is odd d. none of these

If f:N–>N is defined by {[(n+1)/2 (if n is odd) ] ,[( n/2)(if n is even)] is f(n) is one one function?

If n order square matrix A is orthogonal, then ladj (adj A)| is (i) Always - 1 if n is even (ii) Always 1 if n is odd (iii) Always 1 (iv) None of these

Let f:N rarr N defined by f(n)={{:((n+1)/(2) " if n is odd"),(n/2" if n is even"):} then f is