The least number which should be added to 2400 so that the sum is exactly divisible by 5,6,4 and 3 is : Choose the correct option
A) 3 B) 13 C) 20 D) 33 E) 43

Rationale: solution l . c . m . of 5 , 6,4 and 3 = 60 . on dividing 2400 by 60 , the remainder is 40 . ∴ number to be added = ( 60 - 40 ) = 20 . answer c
Answer: C