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If ​n(A ×​B) =858 and ​n(B)=22​, find​ n(A).

 

 

​n(A) =

cassie19  Sep 7, 2017
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n(A) means NUMBER OF NUMBERS (indecision) in a set of A.

you said n(AxB) is 858, and n(B) is 22, so n(A) = n(AxB/B) = 858/22 = 39.

So n(A) = 39.

XxdenurlxX  Sep 7, 2017
edited by XxdenurlxX  Sep 7, 2017

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