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  • Mixed Maths Test Part - 2
  • Which of the following is the least number that is exactl...
Multiple choice

Which of the following is the least number that is exactly divisible by numbers 63, 21 and 45, when decremented by 1?

  1. 315

  2. 314

  3. 63

  4. 42

  5. 316

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

L.C.M of 63, 21 & 45 = 3 x 3 x 7 x 5 = 315 The number required will be 315 + 1 = 316

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