DAY 291:

Today’s Challenge

Read the following facts to work out my identity:

  • I am a 2-digit number
  • my two digits have a difference of four
  • add 13 to me and I become a square number

Who am I?

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 2nd & 3rd rows contain the following fourteen numbers:

8    13    17    25    28    36    42    45    48    55    63    64    66    80

What is the difference between the highest and lowest multiples of 5?

Make 291 Challenge

Can you arrive at 291 by inserting 2, 3, 3, 5 and 6 into the gaps below?

[◯²×(◯+◯)–◯]×◯ = 291

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Your email address will not be published.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 *