DAY 360

Today’s Challenge

Three UNIQUE digits must be used to arrive at a specified target number.

Players must multiply two numbers together, then either add or subtract the third number to achieve your target answer of 25.  The formula is (a×b)±c, where a, b and c are three unique digits from 1-9.

One way of achieving 25 is (8×2)+9, can you find the other EIGHT ways?

[Note:  (8×2)+9 = 25 and  (2×8)+9 = 25 counts as just ONE way.]

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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 3rd column of the playing board contains the following seven numbers:

4     12     15     17     35     80     81

Using these seven numbers exactly once each, with + – × ÷ available to use in your calculation, can you arrive at the target number of 100?

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Answers

. . . can be found when clicking this.

7puzzleblog

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