Expert Mathematics Sets Class 11 Level 8

यदि ({2a+1}={7}), तो (a) का मान क्या है?

If ({2a+1}={7}), what is the value of (a)?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

The singleton sets are equal, so (2a+1=7). This gives (a=3).

Step 2

Why this answer is correct

The correct answer is B. (3). The singleton sets are equal, so (2a+1=7). This gives (a=3).

Step 3

Exam Tip

एक-सदस्यीय समुच्चय बराबर हैं, इसलिए (2a+1=7)। इससे (a=3) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि ({2a+1}={7}), तो (a) का मान क्या है? / If ({2a+1}={7}), what is the value of (a)?

Correct Answer: B. (3). Explanation: एक-सदस्यीय समुच्चय बराबर हैं, इसलिए (2a+1=7)। इससे (a=3) मिलता है। / The singleton sets are equal, so (2a+1=7). This gives (a=3).

Which concept should I revise for this Mathematics MCQ?

The singleton sets are equal, so (2a+1=7). This gives (a=3).

What exam hint can help solve this Mathematics question?

एक-सदस्यीय समुच्चय बराबर हैं, इसलिए (2a+1=7)। इससे (a=3) मिलता है।

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