DAY 126:

Today’s Challenge

In your purse (or pocket), you have SIX each of 7puzzleland’s brand-new 4p and 7p coins. You must try and make various amounts from 20p and above with these coins.

As shown here, the first few have been done for you:

  • 20p can be made from 5 × 4p coins,
  • 21p from 3 × 7p coins,
  • 22p from 2 × 7p coins and 2 × 4p coins . . .

From 20p upwards, what is the lowest amount it is impossible to make from your twelve coins?

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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 up to 84.

The 2nd & 4th rows of the playing board contain the following fourteen numbers:

3     8     10     17     28     32     35     44     48     54     55     60     63     64

What is the difference between the highest multiple of 11 and lowest multiple of 7?

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Answers

. . . can be found when clicking this.

7puzzleblog

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