When you multiply by 1 the answer stays the same. 21 × 1 = 21 When you multiply by 10, move all the digits one place to the left, putting a zero in the empty space. 21 × 10 = 210 When you ...
The answer to the viral brain teaser is indeed 60, and here’s the logic behind it: Each equation follows the rule: (First number × Second number ... making four intentional holes. Adding the standard ...
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