Question

if x= (x:x is a prime number which is less than 15)Y=(y : y is a multiple of 7, 7 <_y <_30)then find i)n (x), ii) n (y) and iii (x-y)​

Answer 1

Step-by-step explanation:

x = {2,3,5,7,11,13}

Y = {7,14,21,28}

1). n(X) = 6

2). n(Y) = 4

3). X-Y = {2,5,11,13}