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Mathematics - Easily Square a 2 Digit Number Ending in 5
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Easily Square a 2 Digit Number Ending in 5

Mathematics

Multiply the first digit by itself + 1, and put 25 on the end.

For Example:
25² = (2x(2+1)) & 25
2 x 3 = 6
625

Trick Source: Unknown - Source of both the Trick Description and Trick Image are unknown

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