DAY 260:

The Main Challenge

All the following 3-digit numbers are divisible by 3, except one.  Which is the odd one out?

102  111  117  126  132  139  144  153  162  168  174  180

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 & 7th rows contain the following fourteen numbers:

4   11   13   24   25   27   30   36   42   45   66   70   77   80

What is the highest multiple of 9 on this list?

The Factors Challenge

Which FIVE of the following numbers are factors of 260?

2    3    4    5    6    7    8    9    10    11    12    13    14

The Mathematically Possible Challenge

Based on our best-selling arithmetic board game.

Using 58 and 11 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

80    81    82    83    84    85    86    87    88    89

#NumbersIn80s

The Target Challenge

Can you arrive at 260 by inserting 1, 2, 3, 4 and 5 into the gaps on each line?

  •  (◯³–◯)××÷◯ = 260
  •  (◯+◯)²×(◯+◯)+◯³ = 260

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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