ENGAGE THOSE BRAINS, folks: we have a teasing question for you.

Each morning this week, we’ll be setting you a (not too) tough riddle to get the cogs whirring and test your mathematical mettle.

If this prospect fills you with either a. joy, or b. dread, the mathsweek.ie site is worth a look – with events for maths fans and for those who might feel the need to brush up on their numeracy skills. The events are running from now until Sunday.

Monday’s puzzle:

The Budget is expected to make adjustments of €2.5 billion. We’ll have to make our euros stretch as far as we can. Imagine you place 2.5 billion euros in a row: what’s the furthest it would stretch? (One euro coin is 23.25mm across)

All answers will be revealed on Friday afternoon. You’ll see what other readers are thinking when you make your choice above and the pie chart shows the most popular option. (We’re not saying that the most popular will be the right one!)

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