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1)

The least number of five digits which is exactly divisible by 12, 15 and 18, is :


A) 10010

B) 10015

C) 10020

D) 10080

Answer:

Option D

Explanation:

LCM of 12, 15 and 18 = 180

Least 5 digit number = 10000

Now find the exact multiple of 180 near to smallest digit of 10000;

10000 / 180 = 55. 55

So by taking round of this number 55 or 56 may be the nearest number to 10000 which is divisible by all above given numbers.

55 x 180 = 9900

56 x 180 = 10080

So, clearly 10080 is the right answer