DAY 333

Today’s Challenge

This is a typical challenge from Kojiro Tominga, a fellow number puzzle designer from Yokohama, Japan.

Insert 2, 2, 3 and 5 in each in the three lines below. Can you correctly arrive at the target answer of 10 every time?

  •  (◯–◯)×◯×◯ = 10
  •  (◯–◯÷◯)×◯ = 10
  •  ◯÷(◯–◯÷◯) = 10

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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 2nd & 6th columns of the playing board contain the following fourteen numbers:

2     7     10     16     30     33     36     40     45     48     49     54     64     70

How many pairs of numbers have a sum of 100?

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Answers

. . . can be found when clicking this.

7puzzleblog

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