\(यदि (U={1,2,\ldots,50}) और (A={x:x \in U\) तथा \(5 \mid x}), तो (n(A')) क्या है\)?
\(If (U={1,2,\ldots,50}) and (A={x:x \in U\) and \(5 \mid x}), what is (n(A'))\)?
Explanation opens after your attempt
Correct Answer
A. (40)
Concept
There are (10) multiples of (5) from (1) to (50). Hence (n(A')=50-10=40).
Why this answer is correct
The correct answer is A. (40). There are (10) multiples of (5) from (1) to (50). Hence (n(A')=50-10=40).
Exam Tip
(1) से (50) तक (5) के (10) गुणज हैं। अतः (n(A')=50-10=40) है।
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