DAY 221:

Today’s Challenge

Group the following numbers into three lots of three so the products of each of the triples are the same. What is this product?

3      4      5      6      7      8      28      30      35

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 5th & 6th rows of the playing board contain the following fourteen numbers:

5    6    7    12    16    18    20    21    33    49    50    56    81    84

From the list, which pair of numbers have a sum of 77?

Make 221 Challenge

Can you arrive at 221 by inserting 4, 6, 9 and 12 into the gaps below?

(◯+◯)²–√(◯+◯) = 221

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Your email address will not be published.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 *