यदि (n\(A\times B\)=15) और (n(A)=5) है, तो (n(B)) कितना होगा?
If (n\(A\times B\)=15) and (n(A)=5), what is (n(B))?
Explanation opens after your attempt
B. (3)
Concept
\(15=5\times n(B)\), so (n(B)=3). To find the unknown count, divide the total pairs by the known count.
Why this answer is correct
The correct answer is B. (3). \(15=5\times n(B)\), so (n(B)=3). To find the unknown count, divide the total pairs by the known count.
Exam Tip
\(15=5\times n(B)\), इसलिए (n(B)=3)। अज्ञात संख्या निकालने के लिए कुल युग्मों को ज्ञात संख्या से भाग दें।
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