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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. This process goes on till person 50 keeps 50 marbles in the 50th box. Find the total
number of marbles kept in the 50th box.
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- 43
- 78
- 6
- 93
Correct Option: D
Marbles in the 50th box will be kept by 1st, 2nd, 5th, 10th, 25th and 50th persons.
[There are the factors of 50].
∴ Number of marbles
= 1 + 2 + 5 + 10 + 25 + 50 = 93
