यदि (n\(A\times B\)=12) और (n(A)=3) है, तो (n(B)) कितना होगा?
If (n\(A\times B\)=12) and (n(A)=3), what is (n(B))?
Explanation opens after your attempt
B. (4)
Concept
(n\(A\times B\)=n(A)n(B)), so (12=3n(B)) and (n(B)=4). Divide to find the unknown count.
Why this answer is correct
The correct answer is B. (4). (n\(A\times B\)=n(A)n(B)), so (12=3n(B)) and (n(B)=4). Divide to find the unknown count.
Exam Tip
(n\(A\times B\)=n(A)n(B)), इसलिए (12=3n(B)) और (n(B)=4)। अज्ञात संख्या निकालने के लिए भाग दें।
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