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)n (x-y)​

Answer 1

Answer:

i) n(x) = 6

ii) n(y) = 1

iii) n(x-y) = 5