A box contains 900 balls, and 90% are red.
How many balls are NOT red?
Most people answer quickly, but the trick is to understand the percentage correctly.
Since 90% are red, the remaining 10% are not red.
10% of 900 = 90.
The correct answer is 90 balls!
What was your first guess? Share your answer in the comments and see if others got it right!
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