Mental Floss

Nine and Back

Sandy Wood
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Please enjoy today's math-related mentalfloss.com Brain Game Tuesday Test Time challenge:

When multiplied by 9, what four-digit number changes to the same four digits in reverse order?

Here is the ANSWER.

QUESTION:

When multiplied by 9, what four-digit number uses the same four digits in reverse order?

ANSWER:

1089, since 1089 x 9 = 9801. 

Thanks for playing! Tomorrow, it's Wordplay Wednesday.

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