DAY 252

Today’s Challenge

Can you complete this task so the three lines work out arithmetically when inserting the digits 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 8 and 9 into the 12 gaps below?

◯  +  ◯   =     7     =   ◯  –  ◯
◯  +  ◯   =    12    =   ◯  ×  ◯
◯  +  ◯   =     4     =   ◯  ÷  ◯

Further details of our pocket book of challenges can be found by clicking MATHELONA.

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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 & 6th rows of the playing board contain the following fourteen numbers:

5     8     12     17     18     20     28     33     48     49     55     56     63     64

How many pairs of consecutive numbers are listed?

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Answers

. . . can be found when clicking this.

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