Question
Wed February 08, 2012 By:

Find the sum of all three digit numbers which are divisible by 4 and 3.

Expert Reply
Wed February 08, 2012
The numbers divisible by 3 and 4 will be divisible by 12 .
So the numbers are 108 , 120 , 132 , ......... , 996
No of terms = (996 - 108)/12 + 1 = 75
Sum = 75/2 * (108 + 996) = 41400
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