Boost your IQ: try our mini-quiz

Why not limber up for tomorrow's Test the Nation quiz?

We've put together ten IQ test questions to give you an idea of what you're up against.

 When you've finished, you can try Test the Nation's mental gym

Which saying means I will return a favour?

	A: Barking dogs seldom bite

	B: You scratch my back and I'll scratch yours

	C: Better the devil you know

	D: Never look a gift horse in the mouth

Choose the next number which continues the series: 1 2 5 10 17 26

	A: 39

	B: 33

	C: 36

	D: 37

Which is the odd one out?

	A: Stool

	B: Deckchair

	C: Lamp

	D: Bench

Which is the odd one out?

	A: Binoculars

	B: Traffic lights

	C: Computer

	D: Vacuum cleaner

What is the square root of 144?

	A: 14

	B: 12

	C: 14.5

	D: 15

What is 22 X 22?

	A: 474

	B: 484

	C: 464

	D: 504

If X=5 and Y=7, X + (Y-X) = ?

	A: 5

	B: 7

	C: 8

	D: 17

Which is the odd one out?

	A: Mackintosh

	B: Roof

	C: Scarf

	D: Umbrella

Which is the odd one out?

	A: Carpet

	B: Linoleum

	C: Parquet

	D: Asphalt

Add up the following numbers: 1+2+3+4+5+6

	A: 20

	B: 21

	C: 22

	D: 23