DAY 336

Today’s Challenge

Try the following MATHELONA challenge by inserting the digits 0, 1, 1, 2, 3, 3, 4, 4, 5, 6, 7 and 7 into the 12 gaps below and making all three lines work out arithmetically.

◯  +  ◯   =     4     =   ◯  –  ◯
◯  +  ◯   =    12    =   ◯  ×  ◯
◯  +  ◯   =     1     =   ◯  ÷  ◯

Further details of our popular pocket book 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 2 up to 84.

The 1st & 5th columns of the playing board contain the following fourteen numbers:

8     11     13     14     18     21     22     25     27     44     55     56     60     84

How many pairs of numbers have a difference of 33?

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Answers

. . . can be found when clicking this.

7puzzleblog

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