DAY 256:

The Main Challenge

Start at 7 and subtract 0.1, followed by 0.2, then 0.3 . . . and so on.

What is the first answer less than 1 you will arrive at . . . and the first negative number following that?

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 of the playing board contain the following fourteen numbers:

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

How many multiples of 3 are listed?

The Factors Challenge

Which of the following numbers are factors of 256?

2     4     6     8     10     12     14     16

Today’s Hint: A number is a multiple of 8 if you halve it, halve it again . . . and it’s still even! ]

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?

11    22    33    44    55    66    77    88    99    110

#11TimesTable

The Target Challenge

Can you arrive at 256 by inserting 2, 3, 4, 5 and 6 into the gaps below?

  •  ◯³×◯²×√(◯+◯–◯) = 256

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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