Put Your Maths Skills to the Test!

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Solve this equation: (x + 4) (x - 4) = 9

x = 9
x = -4
x = 3
x = 5

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Continue with the IQ test afterwards

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Interesting fact:

Did you know that it only takes 23 people in a room to give you an even chance that two of them will share a birthday? If you take the number of people up to 75 however, then the odds change and the chance of 2 of them sharing a birthday goes up to 99%!