Question

If n(A x B) = 20 and n(A) = 5 then n(B) is what ?

Answer 1

Answer:

N(b) = 4

MARK AS BRIANLIST IF POSSIBLE

Answer 2

Answer:

n (A×B)=20

n×(a×b)=20

n (5b)=20

5b=20

b=20/5=4