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I thought I should tell you- I made an utterly useless mathematical discovery today.
It turns out that the difference between any number and the number that has the same digits in reverse (for example, 17 and 71, or 482901 and 109284) is always a multiple of 9. Earthshattering, isn't it?
It turns out that the difference between any number and the number that has the same digits in reverse (for example, 17 and 71, or 482901 and 109284) is always a multiple of 9. Earthshattering, isn't it?
