DAY 174:

Today’s Challenge

Read the facts below to try and work out which number I am today:

  • I am a 2-digit number,
  • I am a multiple of 7,
  • The difference between my two digits is 4.

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 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

Which number, when 1 is subtracted from it, becomes a square number?

Make 174 Challenges

A double challenge! Can you arrive at 174 on both lines by inserting 9, 10, 16 and 20 exactly once each time?

(◯+◯)×(◯–◯) = 174

◯×◯+◯–◯ = 174

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Your email address will not be published.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 *