\(समुच्चय (S_1={x:x\in \mathbb{N},,x\) is a factor of 45 and x+2 is prime}) का सूची रूप क्या है?

\(What is the roster form of (S_1={x:x\in \mathbb{N},,x\) is a factor of 45 and x+2 is prime})?

Explanation opens after your attempt
Correct Answer

C. \(S_1={1,3}\)

Step 1

Concept

Factors of (45) are (1,3,5,9,15,45).

Step 2

Why this answer is correct

Adding (2) gives (3,5,7,11,17,47), all of which are prime.

Step 3

Exam Tip

Therefore all listed factors satisfy the condition, so the full set of factors is needed. चरण 1: (45) के भाजक (1,3,5,9,15,45) हैं। चरण 2: (x+2) जांचें: (3,5,7,11,17,47) मिलते हैं, और ये सभी अभाज्य हैं। चरण 3: इसलिए सभी भाजक लेने चाहिए, न कि केवल छोटे मान।

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Mathematics Answer, Explanation and Revision Hints

\(समुच्चय (S_1={x:x\in \mathbb{N},,x\) is a factor of 45 and x+2 is prime}) का सूची रूप क्या है? \(/ What is the roster form of (S_1={x:x\in \mathbb{N},,x\) is a factor of 45 and x+2 is prime})?

Correct Answer: C. \(S_1={1,3}\). Explanation: चरण 1: (45) के भाजक (1,3,5,9,15,45) हैं। चरण 2: (x+2) जांचें: (3,5,7,11,17,47) मिलते हैं, और ये सभी अभाज्य हैं। चरण 3: इसलिए सभी भाजक लेने चाहिए, न कि केवल छोटे मान। / Step 1: Factors of (45) are (1,3,5,9,15,45). Step 2: Adding (2) gives (3,5,7,11,17,47), all of which are prime. Step 3: Therefore all listed factors satisfy the condition, so the full set of factors is needed.

Which concept should I revise for this Mathematics MCQ?

Factors of (45) are (1,3,5,9,15,45).

What exam hint can help solve this Mathematics question?

Therefore all listed factors satisfy the condition, so the full set of factors is needed. चरण 1: (45) के भाजक (1,3,5,9,15,45) हैं। चरण 2: (x+2) जांचें: (3,5,7,11,17,47) मिलते हैं, और ये सभी अभाज्य हैं। चरण 3: इसलिए सभी भाजक लेने चाहिए, न कि केवल छोटे मान।