DAY 142:

The Main Challenge

From the numbers 1-20, eliminate all:

  • square numbers
  • prime numbers
  • triangular numbers
  • multiples of 6

When adding together the numbers that remain, what is your total?

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 1st & 4th rows of the playing board contain the following fourteen numbers:

2   3   9   10   14   15   22   32   35   40   44   54   60   72

From this list, what is the sum of the multiples of 8?

The Mathematically Possible Challenge

Based on our best-selling arithmetic board game.

Using the three digits 2, 6 and 9 once each, with + – × ÷ available, which are the only TWO numbers it’s possible to make from the list below?

5    10    15    20    25    30    35    40    45    50

#5TimesTable

The Target Challenge

Can you arrive at 142 by inserting 4, 9, 10 and 13 into the gaps on each line?

  •  ◯×◯+◯×◯ = 142
  •  ◯×◯+◯×√◯ = 142

Answers can be found here.

Click Paul Godding for details of online maths tuition.

This entry was posted in 7puzzleblog.com. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *