Concept-wise Practice

missing-prime MCQ Questions for Class 10

missing-prime se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

All Tags Search Similar

Practice Questions

2 questions tagged with missing-prime.

Question 1/2 Medium Mathematics Real Numbers Prime factorisation Class 10 Level 10

(315) में कौन सा अभाज्य गुणनखंड शामिल नहीं है?

Which prime factor is not included in (315)?

Explanation opens after your attempt
Correct Answer

D. 2

Step 1

Concept

Write \(315=9 \times 35\).

Step 2

Why this answer is correct

\(9=3^2\) and \(35=5 \times 7\), so \(315=3^2 \times 5 \times 7\). It does not include (2).

Step 3

Exam Tip

A prime not appearing in the factorisation is not a prime factor of the number. चरण 1: \(315=9 \times 35\) लिखें। चरण 2: \(9=3^2\) और \(35=5 \times 7\), इसलिए \(315=3^2 \times 5 \times 7\)। इसमें (2) शामिल नहीं है। चरण 3: जो अभाज्य गुणनखंडन में नहीं आता, वह उस संख्या का अभाज्य गुणनखंड नहीं है।

Open Question Page
Ask Friends
Question 2/2 Expert Mathematics Real Numbers Prime factorisation Class 10 Level 9

(1260) के अभाज्य गुणनखंडन में कौन सा अभाज्य गुणनखंड शामिल नहीं है?

Which prime factor is not included in the prime factorisation of (1260)?

Explanation opens after your attempt
Correct Answer

A. (11)

Step 1

Concept

Write \(1260=126 \times 10\).

Step 2

Why this answer is correct

\(126=2 \times 3^2 \times 7\) and \(10=2 \times 5\), so \(1260=2^2 \times 3^2 \times 5 \times 7\). It does not include (11).

Step 3

Exam Tip

Match the options with the prime factorisation. चरण 1: \(1260=126 \times 10\) लिखें। चरण 2: \(126=2 \times 3^2 \times 7\) और \(10=2 \times 5\), इसलिए \(1260=2^2 \times 3^2 \times 5 \times 7\)। इसमें (11) नहीं है। चरण 3: विकल्पों को अभाज्य गुणनखंडन से मिलाएं।

Open Question Page
Ask Friends

missing-prime Revision Links

All MCQ Tags

Browse concept directory

All Subjects

Subject-wise practice

Search missing-prime

More keyword results