Seven Sevens
Seven sevens are given. Find the other digits in this multiplication.
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SOLUTION
The answer is:
21817 x 96787 = 2111601979
Leonid Mochalov is a Russian puzzle writer and inventor, who has published several brain teaser books and patented numerous mechanical puzzle toys.
Seven sevens are given. Find the other digits in this multiplication.
The answer is:
21817 x 96787 = 2111601979
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