Question

If n(A×B)=20 and n(A)=5 , then n(B) is_____.​

Answer 1

Answer:

sorry I don't know this answer

Answer 2

Answer:

Formula : n(A) X n(B) = n(A X B)

According to question

n(A X B) = 20, n(A)= 5

n(A) X n(B) = n(A X B)

5 X n(B) = 20

n(B)= 4