Question

40.
If A = 14 + (1 * 2 * 3 * 4 * 5 * . . . . . 10 x 14) and B = 19 + (1 x 2 x 3 x 4 x 5
. . . . 10 x 19), then which one of the following is/are correct?
(i) B-A is a prime number.
(ii) B + A is a composite number.
(iii) A is a composite number.
(iv) B is a prime number.
(A) Both (i) and (ii)
(B) Both (ii) and (iii)
(C) Both (iii) and (iv)
(D) All (i), (ii), (iii) and (iv)
(E) None of these​

Answer 1

Answer:

A) both (i) and (ii)

as A= even

B= odd

they are such that if you subtract them you will get a prime number