Question

9. If A={x/x is a positive multiple of 3 less than 20) and B= {x/x is a prime number less than 20} then, n(A)+n(B) is (a) 6 (b) 8 (c) 13 (d) 14​

Answer 1

B= {x/x is a prime number less than 20} then, n(A)+n(B) is (a) 6 (b) 8 (c) 13 (d) 14​