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It would be more fun to figure it out by yourself. But let me help you get started. The numbers can be written as ABCDE x 4 = EDCBA. Look at the first "A". If this number is 3 or more, the multiplication by 4 will give you six digits instead of five. So it can only be 1 or 2. Hoever, if you look at the second "A", it has to be even (because the digit "E" is multiplied by 4). So it can only be 2.

For the remaining digits, be sure to remember the numbers that may be carried over from digits further on the right.

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15y ago
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Q: What 5 numbers times 4 equals it backwards?
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