Multiple choice

Find the largest number of four digits which is exactly divisible by 21, 18, 12, 15.

  1. 8700

  2. 8810

  3. 8820

  4. 9930

  5. None of these

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

To find greatest which is divisible by 21, 18, 12 and 15, we shall have to find the LCM of 21-18-12-15 which is 1260. After dividing 9999 by 1260 we get 1179 remainder. So answer will be 9999-1179 = 8820