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.

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