### Calendar Capers

Choose any three by three square of dates on a calendar page...

### Have You Got It?

Can you explain the strategy for winning this game with any target?

### Pyramids

What are the missing numbers in the pyramids?

# Pair Sums

##### Age 11 to 14 Challenge Level:

Five numbers are added together in pairs to produce the following answers:

$0, 2, 4, 4, 6, 8, 9, 11, 13, 15$

What are the five numbers?