2 out of 3
Can you arrange the digits 1, 1, 2, 2, 3 and 3 to make a Number Sandwich?
3 out of 3
Place the 16 different combinations of cup/saucer in this 4 by 4 arrangement so that no row or column contains more than one cup or saucer of the same colour.
3 out of 3
3 out of 3
This challenging activity involves finding different ways to distribute fifteen items among four sets, when the sets must include three, four, five and six items.
3 out of 3
A challenging activity focusing on finding all possible ways of stacking rods.
2 out of 3
Can you put the 25 coloured tiles into the 5 × 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
1 out of 3
Can you find numbers between 100 and 999 that have a middle digit equal to the sum of the other two digits?
1 out of 3
Countries from across the world competed in a sports tournament. Can you devise an efficient strategy to work out the order in which they finished?
1 out of 3
The letters in the following addition sum represent the digits 1 ... 9. If A=3 and D=2, what number is represented by "CAYLEY"?
1 out of 3
In a league of 5 football teams which play in a round robin tournament show that it is possible for all five teams to be league leaders.
