DAY 282:

Today’s Challenge

Here’s another MATHELONA challenge based on my popular number puzzles.

Can you make all four lines work out arithmetically by replacing the 16 ◯’s with digits from 0 to 9?  Remember, each digit can only be inserted a maximum of TWICE:

◯  +  ◯   =    7    =   ◯  +  ◯
◯  +  ◯   =    4    =   ◯  –  ◯
◯  +  ◯   =    6    =   ◯  ×  ◯
◯  +  ◯   =    3    =   ◯  ÷  ◯

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

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 6th rows contain the following fourteen numbers:

2    5    9    12    14    15    18    20    22    33    40    49    56    72

What is the sum of the multiples of 11?

Make 282 Challenge

Can you arrive at 282 by inserting 1, 2, 3, 4 and 5 into the gaps below?

[²×(+)–◯]×◯ = 282

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

This entry was posted in 7puzzleblog.com. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *