perplexus.info :: Numbers : Sum and Product reversal

Sum and Product reversal (Posted on 2006-04-05)

9+9 is the reversal of 9*9 (18 versus 81)
3+24 is the reversal of 3*24 (27 versus 72)
Find a pair of numbers whose product and sum are reversals of a three digit number.

Submitted by Jer

Rating: 3.5000 (4 votes)

Solution: (Hide)

The solution is 2 and 497.
2+497 = 499
2*497 = 994
The comments list some others with leading zeroes and/or negative numbers which are also valid.

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

Subject	Author	Date
Answer	K Sengupta	2008-07-19 06:50:43
Yes that is the only solution	Ravi	2006-04-19 08:26:33
re: No zeros, no negatives	Dej Mar	2006-04-05 22:17:41
No zeros, no negatives	Rollercoaster	2006-04-05 13:16:30
here's one without leading zeros...	Brian	2006-04-05 13:03:27
question (spoiler?)	Bob Smith	2006-04-05 12:11:07

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