Only those with a high IQ can find the missing number in this brainteaser – but can you beat the three minute record?

TWIDDLING your thumbs this bank holiday Sunday? We have just the thing to keep you and your brain busy.

The new brainteaser challenges readers to correctly work out the value of each of the symbols to find the value of the missing number at the end of the sequence. 

TombolaCan you work out the missing number in this puzzle?[/caption]

Although this seems like an easy task, just one in five readers can correctly work out the missing number in under a minute. 

On average...