\(यदि (U={1,2,\ldots,30}), (A={x:x \in U\) तथा x का अंतिम अंक 0 या 5 है}), तो (n(A')) क्या है?

\(If (U={1,2,\ldots,30}), (A={x:x \in U\) and the last digit of x is 0 or 5}), what is (n(A'))?

Explanation opens after your attempt
Correct Answer

A. (24)

Step 1

Concept

(A) has (6) elements: (5,10,15,20,25,30). Therefore (n(A')=30-6=24).

Step 2

Why this answer is correct

The correct answer is A. (24). (A) has (6) elements: (5,10,15,20,25,30). Therefore (n(A')=30-6=24).

Step 3

Exam Tip

(A) में (5,10,15,20,25,30) यानी (6) सदस्य हैं। इसलिए (n(A')=30-6=24) है।

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Mathematics Answer, Explanation and Revision Hints

\(यदि (U={1,2,\ldots,30}), (A={x:x \in U\) तथा x का अंतिम अंक 0 या 5 है}), तो (n(A')) क्या है? \(/ If (U={1,2,\ldots,30}), (A={x:x \in U\) and the last digit of x is 0 or 5}), what is (n(A'))?

Correct Answer: A. (24). Explanation: (A) में (5,10,15,20,25,30) यानी (6) सदस्य हैं। इसलिए (n(A')=30-6=24) है। / (A) has (6) elements: (5,10,15,20,25,30). Therefore (n(A')=30-6=24).

Which concept should I revise for this Mathematics MCQ?

(A) has (6) elements: (5,10,15,20,25,30). Therefore (n(A')=30-6=24).

What exam hint can help solve this Mathematics question?

(A) में (5,10,15,20,25,30) यानी (6) सदस्य हैं। इसलिए (n(A')=30-6=24) है।