यदि \(A={x\in \mathbb{Z}:x^2=25}\), \(B=\{5,-5\}\) और \(C=\{-5,5,5\}\) हैं, तो सही कथन क्या है?

If \(A={x\in \mathbb{Z}:x^2=25}\), \(B=\{5,-5\}\), and \(C=\{-5,5,5\}\), what is the correct statement?

Explanation opens after your attempt
Correct Answer

A. (A=B=C)

Step 1

Concept

The integer solutions of \(x^2=25\) are (5) and (-5).

Step 2

Why this answer is correct

The repetition of (5) in (C) does not change the set.

Step 3

Exam Tip

Compare distinct elements when checking equality. चरण 1: \(x^2=25\) के पूर्णांक हल (5) और (-5) हैं। चरण 2: (C) में (5) का दोहराव समुच्चय को नहीं बदलता। चरण 3: बराबरी जाँचते समय सभी भिन्न अवयवों की तुलना करें।

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यदि \(A={x\in \mathbb{Z}:x^2=25}\), \(B=\{5,-5\}\) और \(C=\{-5,5,5\}\) हैं, तो सही कथन क्या है? / If \(A={x\in \mathbb{Z}:x^2=25}\), \(B=\{5,-5\}\), and \(C=\{-5,5,5\}\), what is the correct statement?

Correct Answer: A. (A=B=C). Explanation: चरण 1: \(x^2=25\) के पूर्णांक हल (5) और (-5) हैं। चरण 2: (C) में (5) का दोहराव समुच्चय को नहीं बदलता। चरण 3: बराबरी जाँचते समय सभी भिन्न अवयवों की तुलना करें। / Step 1: The integer solutions of \(x^2=25\) are (5) and (-5). Step 2: The repetition of (5) in (C) does not change the set. Step 3: Compare distinct elements when checking equality.

Which concept should I revise for this Mathematics MCQ?

The integer solutions of \(x^2=25\) are (5) and (-5).

What exam hint can help solve this Mathematics question?

Compare distinct elements when checking equality. चरण 1: \(x^2=25\) के पूर्णांक हल (5) और (-5) हैं। चरण 2: (C) में (5) का दोहराव समुच्चय को नहीं बदलता। चरण 3: बराबरी जाँचते समय सभी भिन्न अवयवों की तुलना करें।