DAY 160:

Today’s Challenge

Read the following five clues and work out which number I am today:

  • I am a 2-digit number
  • My 1st digit is bigger than my 2nd digit
  • I am less than 50
  • I am an odd number
  • I am not a prime number

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 & 5th rows contain the following fourteen numbers:

2     6     7     9     14     15     16     21     22     40     50     72     81     84

Which of the multiples of 10 has more factors?

Answers can be found here.

Click this link for details of online math tuition with me, Paul Godding.

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