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# The ABC's of numbers

### #1

Posted 11 May 2013 - 01:08 AM

A's double exceeds its half by 99. B is twice the product of its digits. C is thrice the sum of its digits. Half of D exceeds its third by the sum of its digits. E is increased by 20% if its digits are reversed. F can be squared by sandwiching in two more digits between its original two. G differs from its reverse by twice the product of its digits. The product of H's digits is twice their sum. And turn I upside down and you'll increase it by 12.

If each one of these are whole numbers with two digits, which one is the greatest?

### #2

Posted 11 May 2013 - 08:36 AM Best Answer

### #3

Posted 11 May 2013 - 10:21 AM

Spoiler for

*The greatest challenge to any thinker is stating the problem in a way that will allow a solution.*

- Bertrand Russell

### #4

Posted 12 May 2013 - 02:05 AM

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