Question

Let p&q be the number of natural numbers which are less than or equal 20 and are prime & composite
respectively, then 20-p-q is equal to
(A) 1
(B)0
(C) 2.
(D) 3
rehension-2 (Q. No. 4 to 6)​

Answer 1

Answer:

LET P=10&Q=7 THEN

20-P-Q=3

ANS:D