CTET · Mathematics

LCM questions with answers

Build accuracy with explanation-led practice, then open a focused search or timed exam drill.

PRACTICE PREVIEW

Five questions to begin your revision

Open each answer only after choosing your own response.

01Medium · ✓ Verified answer

CTET practice check: What is the least common multiple of the consecutive numbers 26 and 27?

  1. 675
  2. 755
  3. 702
  4. 728
Check answer and explanation +
C — 702

Consecutive integers are coprime, so their LCM is their product: 26 × 27 = 702. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · LCM; mapped to the published CTET quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
02Medium · ✓ Verified answer

CTET high-priority drill: What is the least common multiple of the consecutive numbers 27 and 28?

  1. 811
  2. 756
  3. 783
  4. 728
Check answer and explanation +
B — 756

Consecutive integers are coprime, so their LCM is their product: 27 × 28 = 756. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · LCM; mapped to the published CTET quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
03Medium · ✓ Verified answer

CTET foundation revision: What is the least common multiple of the consecutive numbers 28 and 29?

  1. 812
  2. 840
  3. 783
  4. 869
Check answer and explanation +
A — 812

Consecutive integers are coprime, so their LCM is their product: 28 × 29 = 812. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · LCM; mapped to the published CTET quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
04Medium · ✓ Verified answer

CTET speed-building set: What is the least common multiple of the consecutive numbers 29 and 30?

  1. 899
  2. 840
  3. 929
  4. 870
Check answer and explanation +
D — 870

Consecutive integers are coprime, so their LCM is their product: 29 × 30 = 870. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · LCM; mapped to the published CTET quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
05Medium · ✓ Verified answer

CTET accuracy checkpoint: What is the least common multiple of the consecutive numbers 30 and 31?

  1. 899
  2. 991
  3. 930
  4. 960
Check answer and explanation +
C — 930

Consecutive integers are coprime, so their LCM is their product: 30 × 31 = 930. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · LCM; mapped to the published CTET quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
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