Math Puzzles and Games
5. What number when multiplied against
itself will result in a number which includes the numbers (1 -
9) in forward order, and then descending in order from the 9?
(i.e., to get the number: 12,345,678,987,654,321)
Solution: 111,111,111 X 111,111,111 = 12,345,678,987,654,321
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