Find the sum of integers which are divisible by 2 and 3 from 1 to 50. – InterviewSolution

1.

Find the sum of integers which are divisible by 2 and 3 from 1 to 50.

Answer»

Numbers which are divisible by 2 and 3

i.e., which are divisible by 6 from 1 to 50 are 6,12 …………….48.

Sum of the numbers = 6 + 12 + ……..+ 48

= 6(1 + 2 +……… + 8)

= 6 [\(\frac{8(8\,+\,1)}{2}\)]

= 3 × 8 × 9 = 216

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