`(115)^96-(96)^115` is divisible by (A) 17 (B) 19 (C) 21 (D) 23

For all n inN,3*5^(2n+1)+2^(3n+1) is divisible by (A) 19 (B) 17 (C) 23 (D) 25

For all n inN,3*5^(2n+1)+2^(3n+1) is divisible by (A) 19 (B) 17 (C) 23 (D) 25

For all n in N , 3xx5^(2n+1)+2^(3n+1) is divisible by a. 19 b. 17 c. 23 d. 25

For all nN,3xx5^(2n+1)+2^(3n+1) is divisible by 19 b.17 c.23d.25

Which term of the A.P.: 5,11,17,... is 119? (A) 18 (B) 19 (C) 20 (D) 21

If n is any odd number greater than 1, then n backslash(n^(2)-1) is divisible by 24 always (b) divisible by 48 always (c) divisible by 96 always (d) None of these

Let x,y,z are positive reals and x +y+z=60 and x gt 3. Maximum value of (x-3) (y+1) (z+5) is : (a) (17) (21) (25) (b) (20) (21) (23) (c) (21) (21)(21) (d) (23)(19) (15)

24.96^(2)-:(34.11-:20.05)+67.96-89.11=? (a) 884 (b) 346 (c) 252 (d) 424 (e) 366

Which is not a prime number? (a) 13 (b) 19quad (c)21, (d) 17

The value of cot sum_(n=1)^(19)(cot^(-1)(1+sum_(p=1)^(n)2p)) is equal to (a) (21)/(19) (b) (19)/(21) (c) -(19)/(21) (d) -(21)/(19)