ADVERTISEMENT
Riddle:

A man told his son that he would give him $1000 if he could accomplish the following task. The father gave his son ten envelopes and a thousand dollars, all in one dollar bills. He told his son, "Place the money in the envelopes in such a manner that no matter what number of dollars I ask for, you can give me one or more of the envelopes, containing the exact amount I asked for without having to open any of the envelopes. If you can do this, you will keep the $1000." When the father asked for a sum of money, the son was able to give him envelopes containing the exact amount of money asked for. How did the son distribute the money among the ten envelopes?

Answer:

The contents or the ten envelopes (in dollar bills) should be as follows: $1, 2, 4, 8, 16, 32, 64, 128, 256, 489. The first nine numbers are in geometrical progression, and their sum, deducted from 1,000, gives the contents of the tenth envelope.

Is this worth sharing?
Comment
ADVERTISEMENT

Riddles needing much effort or skill to accomplish, deal with, or understand. These won't tease your brain they will destroy it!

The Riddles Mission

The Riddles.com mission is to be the be the world's most comprehensive riddle website on the internet for riddles, puzzles, rebus caps and quizzes. Our riddle library contains interesting riddles and answers to test visitors and evoke deep thought and community discussion. Riddlers will benefit from the creativity of our members who participate in growth of our online riddles and puzzles resource. We encourage you to become a member of Riddles.