DAY 305

Today’s Challenge

. . . is a typical MATHELONA challenge from our pocket book of number puzzles.

Your task is to make all three lines work out arithmetically by replacing the 12 ◯’s with the following group of 12 numbers.  Can you successfully complete this?

1      1      2      2      2      3      4      4      5      6      7      8

◯  +  ◯   =     5     =   ◯  –  ◯
◯  +  ◯   =    10    =   ◯  ×  ◯
◯  +  ◯   =     2     =   ◯  ÷  ◯

Full details of our MATHELONA number puzzles can be found by clicking the link.

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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 6th & 7th rows of the playing board contain the following fourteen numbers:

4     5     11     12     18     20     24     27     30     33     49     56     70     77

How many multiples of 7 are in the list?

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Answers

. . . can be found when clicking this.

7puzzleblog

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