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prime-composite-lcm-hcf-l1 MCQ — 10 Practice Questions with Answers

Practice 10 prime-composite-lcm-hcf-l1 multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.

10 Questions mathematics-elementary

Practice Questions

Q1. During a factor-card activity, Tara uses a wheelchair and cannot reach the floor number line easily. What is the most inclusive teacher action?

A Let Tara only watch while other children jump.
B Remove the activity and give everyone a worksheet.
C Ask Tara to do only prime definitions orally later.
D Give Tara reachable factor cards and let her call or place shared factors. Correct

Explanation

This is the R5 inclusive-pedagogy item. Inclusion does not mean removing mathematics; it means changing access. Tara can still identify factors, common factors and HCF by using reachable cards, calling answers, or managing the marker for the group.

Q2. Which statement about the number 1 is correct?

A 1 is neither prime nor composite. Correct
B 1 is the smallest prime number.
C 1 is the smallest composite number.
D 1 is prime and composite together.

Explanation

Asha should first ask how many factors the number has. Since 1 has only one factor, it is neither prime nor composite. This is a frequent REET trap because candidates remember that counting starts at 1 but forget the definition of prime and composite numbers.

Q3. Which pair is correct for 8 and 12?

A HCF 24, LCM 4
B HCF 2, LCM 12
C HCF 4, LCM 24 Correct
D HCF 8, LCM 12

Explanation

For 8 and 12, the common factors are 1, 2 and 4, so HCF is 4. The common multiples begin at 24, so LCM is 24. Meena can also check that HCF times LCM equals 8 times 12.

Q4. What is the LCM of 4 and 6?

A 2
B 12 Correct
C 24
D 10

Explanation

The multiples of 4 are 4, 8, 12, 16 and so on. The multiples of 6 are 6, 12, 18 and so on. The first shared number is 12, so Joseph should mark 12 as the LCM.

Q5. Choose the correct pair of statements.

A 2 is prime; 9 is composite. Correct
B 2 is composite; 9 is prime.
C 2 is neither prime nor composite; 9 is prime.
D Both 2 and 9 are prime.

Explanation

This item checks two classic facts together. In Meena's revision card, 2 should be marked as the only even prime, and 9 should be marked composite because 3 divides it exactly. The option that relies on odd or even alone is unsafe.

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Q6. Imran arranges 13 counters. He can make only one rectangle: 1 by 13. What should the teacher say?

A 13 is prime because its only factors are 1 and 13.
B 13 is composite because it is odd.
C 13 is neither prime nor composite like 1.
D 13 is LCM because it is the smallest rectangle.
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Q7. Assertion: For 12 and 18, the HCF is 6. Reason: Their common factors are 1, 2, 3 and 6, and the greatest is 6.

A Assertion true, reason false.
B Both true, and the reason explains the assertion.
C Assertion false, reason true.
D Both false.
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Q8. Which method is best matched with the learning aim?

A Prime number: first common landing point
B HCF: list multiples and choose the first shared number
C LCM: list factors and choose the greatest shared number
D Composite number: build more than one equal-row rectangle
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Q9. A child says, 'Every odd number is prime.' Which teacher response is best?

A Agree, because all even numbers are composite.
B Tell the child to memorise all primes without discussion.
C Ask the child to arrange 9 as 3 rows of 3 counters.
D Change the topic because odd and prime are unrelated.
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Q10. Match the term with the best meaning: 1. HCF 2. LCM 3. Factor 4. Multiple

A 1 least common multiple, 2 greatest common factor, 3 repeated jump, 4 exact divider
B 1 greatest common factor, 2 least common multiple, 3 exact divider, 4 repeated jump
C 1 exact divider, 2 repeated jump, 3 greatest common factor, 4 least common multiple
D 1 repeated jump, 2 exact divider, 3 least common multiple, 4 greatest common factor

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Frequently Asked Questions

How many prime-composite-lcm-hcf-l1 MCQ questions are available?
There are 10 prime-composite-lcm-hcf-l1 practice MCQs available on Aspirant Academy, with detailed answers and explanations for each question.
Are answers and explanations provided for prime-composite-lcm-hcf-l1 MCQs?
Yes, every prime-composite-lcm-hcf-l1 question comes with the correct answer and a detailed explanation to help you understand the underlying concept.
How is prime-composite-lcm-hcf-l1 relevant to the RAS/RPSC exam?
prime-composite-lcm-hcf-l1 falls under the mathematics-elementary section of the RAS/RPSC syllabus. It is a frequently tested area and regular practice with these MCQs will strengthen your preparation.
Can I practice prime-composite-lcm-hcf-l1 questions in Hindi?
Yes, Aspirant Academy offers bilingual support. You can practice prime-composite-lcm-hcf-l1 MCQs in both English and Hindi, including questions, options, and explanations.

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