यदि ({a+2}={9}), तो (a) का मान क्या है?

If ({a+2}={9}), what is the value of (a)?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

Singleton sets are equal, so (a+2=9). Hence (a=7).

Step 2

Why this answer is correct

The correct answer is C. (7). Singleton sets are equal, so (a+2=9). Hence (a=7).

Step 3

Exam Tip

एक-सदस्यीय समुच्चय बराबर हैं, इसलिए (a+2=9)। इससे (a=7) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि ({a+2}={9}), तो (a) का मान क्या है? / If ({a+2}={9}), what is the value of (a)?

Correct Answer: C. (7). Explanation: एक-सदस्यीय समुच्चय बराबर हैं, इसलिए (a+2=9)। इससे (a=7) मिलता है। / Singleton sets are equal, so (a+2=9). Hence (a=7).

Which concept should I revise for this Mathematics MCQ?

Singleton sets are equal, so (a+2=9). Hence (a=7).

What exam hint can help solve this Mathematics question?

एक-सदस्यीय समुच्चय बराबर हैं, इसलिए (a+2=9)। इससे (a=7) मिलता है।