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MATHS WEEK: Take our final puzzle of the week

Can you figure this one out?

Image: AP/Press Association Images

IT’S THE FINAL day of Maths Week. People up and down the country have spent the past seven days celebrating all the great things about algebra, trigonometry, probability and calculus.

Each morning, we’ve been setting you a puzzle to test your mathematical mettle. It’s all part of the drive to improve Ireland’s numeracy skills – and remember it’s never too late.

(If numbers absolutely terrify you, take a trip to the website where you’ll find more information and help).

Here’s the final puzzle: 

A group of friends arrange to have a Hallowe’en party. They agree that each person will bring a gift for each of the others. At the party because of some no-shows 18 presents are brought and there were 12 presents left over. How many people in the group and how many turned up?

Check back tomorrow, same time of 11.15am, for the answers.

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Click here for the answer to Saturday’s puzzle>

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