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Âé¶¹´«Ã½ puzzle #26: Evening out

16 October 2019

#26 Evening out

Âé¶¹´«Ã½. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

The figure above is composed of 15 matchsticks. Move 2 matchsticks to get a 3-digit number with all the digits even numbers. Find them all!

Answer next week

#25 Car crash maths

Solution

A blue car travelling at 70mph and a yellow one at 100mph brake simultaneously when they see a fallen tree ahead. The blue one stops just in time. But the yellow one hits the tree at about 70mph, so option (d) is the best answer. The yellow car hasn’t even got down to the speed that the blue car was travelling at. Here is…

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