DAY 313

Today’s Challenge

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

By inserting 4, 7, 7 and 9 in each in the three lines below, can you correctly arrive at the target answer of 10 every time?  Remember BIDMAS/BODMAS/PEMDAS.

  •  (◯–◯)×◯–◯ = 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 & 5th rows of the playing board contain the following fourteen numbers:

6     7     8     16     17     21     28     48     50     55     63     64     81     84

Which number is the product of two other numbers on the list?

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Answers

. . . can be found when clicking this.

7puzzleblog

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