DAY 7:

Today’s Challenge

Start with the number 7.  Add 1 to this, then 3, then to that answer add 5, then 7 . . . and keep on adding consecutive odd numbers to the previous total.

What is the first answer you reach that is greater than 100?

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 3rd & 4th rows of the playing board contain the following fourteen numbers:

3   10   13   25   32   35   36   42   44   45   54   60   66   80

What is the sum of the multiples of 11?

Make 7 Challenge

Can you arrive at 7 by inserting 1, 3, 6 and 10 into the gaps on each line?

  •  ◯+×–◯ = 7
  •  ◯×(+) = 7
  •  [–√(+)]× = 7
  •  (+)²÷(–◯) = 7

Answers can be found here.

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