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1, 2, 3, 4, 5, 6, and 7 to 100

Solution Step 0/0
Put 4 pluses between 1, 2, 3, 4, 5, 6, and 7 to get a total of 100.

There are 2 solutions to this puzzle. Do they have at least one number in common?

Explanations

1 + 23 + 4 + 5 + 67 = 100
1 + 2 + 34 + 56 +7 = 100

For both solutions the odd “1“ is a common number.

[After Boris A. Kordemsky. The Moscow Puzzles: 359 mathematical recreations. 1972]
Check an even number
Check a 2-digit number
Check an odd number
Check no common number

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    • Puzzle 1, 2, 3, 4, 5, 6, and 7 to 100

    Puzzle 1, 2, 3, 4, 5, 6, and 7 to 100