Question

If n(A×B)=15 and n(A)=3 then n (B) is

Answer 1

Answer:

this question answer is

n(B)=5

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Answer 2

awnser 5

n(A) × n(B) = n(A × B)

3 × n(B) = 15

n(B) = 15 / 3

n(B) = 5.