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Sisters and Brothers

Cassandra, David and Lachlan are brothers and sisters. They range in age between 1 year and 14 years. Can you figure out their exact ages from the clues?

Domino Square

Use the 'double-3 down' dominoes to make a square so that each side has eight dots.

4 Dom

Use these four dominoes to make a square that has the same number of dots on each side.

Gift Stacks

Age 7 to 11 Challenge Level:

How many gifts could there be in the first pile? So how many does this mean there are in the second? And third? Does this fit all the information?
If not, what could you try next?
You might find it helpful to use some counters as the presents, or draw some pictures.