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Which student made a better choice and how much was the profit?

+1 vote
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Many students applied for a technical job for a month(April) but only two among them successfully completed the technical rounds. It was time for the final Interview. The interviewer asked both the students whether they would like to have 10 crores rupees for the month or, Re. 1 on day 1, Rs. 2 on day 2, Rs. 4 on day 3 , doubling up everyday till the last day of the month.
Student 1 chose 10 crore rupees. Student 2 chose the other option.
Which student made a better choice and how much was the profit?

posted Jul 9, 2017 by Ram Jana

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1 Answer

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The 2nd student made a better deal
On a 30 day month he earns Rupees 2^29 = 53,68,70,912
ie., 43,68,70,912 more than what student 1 would earn
Even on the month of February (Non leap) with 28 days
Student 2 earns more as 2^27 = 13,42,17,728 > 10,00,00,000/-
by 3,42,17,738/-

answer Jul 16, 2017 by Tejas Naik



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