Question

if n(A×B)=20 and n(A)=5 then n(B)is____

Answer 1

Answer:

4

Explanation:

Answer 2

Answer:

$\huge \bf {n(A×B)=20 and n(A)=5 then n(B)is}$

Explanation:

Given

$n(A)=5$

$\therefore \: n( 5 \times b) = 20$

$\therefore \sf \: b = 4$

$since \: 5 \times x = 20 \implies x = \dfrac{5 }{20} \\ \\ \\ \\ \\ \\ \huge \: we \: get \: x = b = 4$

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