+0  
 
0
686
1
avatar+225 

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

 

 

​n(A) =

 Sep 7, 2017
 #1
avatar+23 
+1

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.

 Sep 7, 2017
edited by XxdenurlxX  Sep 7, 2017

0 Online Users