1. Ten RED socks and ten BLUE socks are all mixed up
in a dresser drawer. The socks are EXACTLY the
same except for the colour.
The room is in complete darkness and you want two
matching socks.
What is the smallest number of socks you need to
remove from the drawer in order to be certain that
you have a matching pair?

2. I originally had £100 in the bank. Then I made six withdrawals.
These withdrawals add up to £100, but according to my records
there was only £99 in the Bank to draw out.
What happened
to the £1 ?
Withdrawals
Amount left
£50
£25
£10
£15 £8 £7 £5 £2
£100
£99

3. Move 1 coin so that you have 2 straight rows,
each row containing 4 coins. 1p 1p 1p 1p 1p 1p

4. Can you circle six digits so that the total is 21 ?

5. 1 2 3 4 Each book is 5 centimetres wide. This includes the covers,
which are ⅛ of a centimetre thick.
If a bookworm starts on page 1 of Book 1 and eats his way
through to the last page of Book 4.
How far has the bookworm travelled ? 1 2 3 4

6. A basketball weighs 600g plus half it weight.
What is the weight of the basketball ?

7. Which deal should you take and why ?
Suppose you take a new job and the boss offers
you a choice between :
A - £4000 for your first year of work, and a raise
of £800 for each year thereafter.
B - £2000 for your first 6months of work, and a
raise of £200 every six months thereafter.
Which deal should you take and why ?

8. What is the basis for the order in which these
ten digits have been arranged ?
8 – 5 – 4 – 9 – 1 – 7 – 6 – 3 – 2 - 0