Puzzles

One activity that many of our members enjoy is puzzling! You can test yourself for fun with our brainteasers. Our quizzes and conundrums are updated regularly, so do check back on the page for the latest content, and if you get really good at them, why not find out what your IQ is by booking a Mensa Supervised IQ Test?

20/4/25 – Easter Eggs

In the grid below, each coloured egg stands for a different number. Some rows and columns have been added together and their totals given. What is the value of the blue egg?

Puzzle courtesy of Mensa member Peter Hooton

  • Show Answer

Blue = 9

Column 1 = Column 4 = 22

The sum of the rows (21 + 31 + 37 + 26 = 115) equals the sum of the columns.

Therefore, Column 3 = 26

Row 1 gives: 3 Reds + 1 Blue = 21 (equation 1)

Column 3 gives: 2 Reds + 2 Blues = 26 (equation 2)

So Blue = Red + 5

Hence 3 Reds + (Red + 5) = 21 (from equation 1)

Red = 4 so Blue = 9

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