DELEDCET · Numerical Ability

LCM questions with answers

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PRACTICE PREVIEW

Five questions to begin your revision

Open each answer only after choosing your own response.

01Medium · ✓ Verified answer

HP D.El.Ed CET practice check: What is the least common multiple of the consecutive numbers 17 and 18?

  1. 323
  2. 288
  3. 341
  4. 306
Check answer and explanation +
D — 306

Consecutive integers are coprime, so their LCM is their product: 17 × 18 = 306. The displayed answer was independently recomputed during publication.

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

HP D.El.Ed CET high-priority drill: What is the least common multiple of the consecutive numbers 18 and 19?

  1. 323
  2. 379
  3. 342
  4. 360
Check answer and explanation +
C — 342

Consecutive integers are coprime, so their LCM is their product: 18 × 19 = 342. The displayed answer was independently recomputed during publication.

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

HP D.El.Ed CET foundation revision: What is the least common multiple of the consecutive numbers 19 and 20?

  1. 419
  2. 380
  3. 399
  4. 360
Check answer and explanation +
B — 380

Consecutive integers are coprime, so their LCM is their product: 19 × 20 = 380. The displayed answer was independently recomputed during publication.

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

HP D.El.Ed CET speed-building set: What is the least common multiple of the consecutive numbers 20 and 21?

  1. 420
  2. 440
  3. 399
  4. 461
Check answer and explanation +
A — 420

Consecutive integers are coprime, so their LCM is their product: 20 × 21 = 420. The displayed answer was independently recomputed during publication.

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

HP D.El.Ed CET accuracy checkpoint: What is the least common multiple of the consecutive numbers 21 and 22?

  1. 483
  2. 440
  3. 505
  4. 462
Check answer and explanation +
D — 462

Consecutive integers are coprime, so their LCM is their product: 21 × 22 = 462. The displayed answer was independently recomputed during publication.

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

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