Wednesday, November 9, 2011

This is a long one!

Cam asked Jordan for his phone number. Jordan loves math so much that he gave Cam a riddle for each digit.

1. Multiply me by 2 and add 4. Divide that by 8, then add 3 to get 5.
2. Add 4 to me and multiply by 3. Subtract 2 then add 7 to get 32.
3. Subtract 3 from me and divide by 2. Now add 5, then multiply by 3 to get 24.
4. Add 7 to me and multiply by 2. Now subtract 4, then divide by 3 to get 4.
5. Multiply me by 3 and add 9. Now divide by 6, then add 3 to get 8.
6. Subtract 2 from me and divide by 5. Now add 6, then multiply by 2 and you get 14.
7. Divide me by 2, then add 11. Now multiply by 3, then subtract 27 and you get 18.

What is Jordan's phone number? What was the trick to answering this question?

1 comment:

  1. The trick to this question was working backwards, and doing the opisite operation (divide=multiply, addition=subtraction). So the correct answer was 659-1778.

    ReplyDelete