[" If "n" is an integer between "20" and "80," then any of "],[" the following could be "n+7" except "]

If n is an integer between 20 and 80, then any of the following could be n backslash+backslash7 except 47 (b) 58(c)84 (d) 88

If n and s are integers, and n+5lt7 and s-6lt-4 , which of the following could be a value of n+s?

If n is an integer between 0 and 21, then the minimum value of n!(21-n)! is attained for n= 1 b. 10 c. 12 d. 20

If n is an integer between 0 and 21, then the minimum value of n!(21-n)! is attained for n= 1 b. 10 c. 12 d. 20

If n be any integer, then n(n+1) (2n+1) is-

If n is any integer, then the value of (-sqrt(-1))^(4n+3)

If n is an integer between 0 and 21, then the minimum value of n!(21-n)! is attained for n= a. 1 b. 10 c. 12 d. 20

If ‘n’ be any integer ,then n(n+1)( 2n+1) is :

If n is an integer between 0 and 21, then the minimum value of n!(21-n)! is attained for n=1 b.10 c.12d.20

Prove that n!+1 is not divisible by any integer between 2 and n.