DAY 347

Today’s Challenge

How many 3-digit numbers contain at least two 7’s?

If you have an answer, comment below or send us a tweet at @7puzzle.

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 4th & 7th columns of the playing board contain the following fourteen numbers:

3     5     6     9     20     24     28     32     42     50     63     66     72     77

Can you find which number, when multiplied by 10, is also on the list?

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Answers

. . . can be found when clicking this.

7puzzleblog

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