There are 50 boxes and 50 persons. Person 1 keeps 1 marble in every box, person

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There are 50 boxes and 50 persons. Person 1 keeps 1 marble in every box, person 2 keeps 2 marbles in every 2nd box, person 3 keeps 3 marbles in every third box. The process goes on till person 50 keeps 50 marbles in the 50th box. Find the total number of marbles kept in the 50th box.

Options:

A . 43

B . 78

C . 6

D . 93

Answer: Option D
Marbles in the 50th box will be kept by 1st, 2nd, 5th, 10th, 25th and 50th person is a factor of 50.
Number of marbles
=1 + 2 + 5 + 10 + 25 + 50= 93

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