perplexus.info :: Just Math : Pocket Change

Pocket Change (Posted on 2013-07-30)

A friend of mine, Sol announces that he has a number of coins in his pocket that add up to precisely one dollar. When he tells me how many coins he has, I ask if any one of them is a half-dollar. Sol tells me "no". I realize that I can't tell for sure what coins he has, because there are six different combinations that produce precisely one dollar.

How many coins does Sol have in his pocket?

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

There are 15 coins in Sol's pocket.

For a detailed explanation, refer to the solution submitted by Charlie here and here.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re: computer solution - the program	Charlie	2013-07-30 16:24:39
computer solution	Charlie	2013-07-30 16:23:03
re: Solution	Charlie	2013-07-30 16:17:16
Solution	Brian Smith	2013-07-30 14:43:39
Partial solution?	Bryan	2013-07-30 14:29:22

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