A box has 900 balls. 90% are red.

the statement?

Not exactly.

If every ball is red, then 100% are red, not 90%.

In that case, the number of balls that are not red would be:

0.

So why bring up this second answer?

Because many brain teasers encourage us to test our assumptions.

The puzzle invites us to think about percentages.

A playful thinker may ask:

“What if the information is misleading,continue reading …