How many times can you subtract 2 from 21 without getting a negative number for an answer?

Quizzes, Brainteasers & Riddles
0 5

this isn't even a brain teaser, it's a 1st grade math problem

Once, then you're subtracting 2 from 19, 17, etc.

infinitely. just take 2 from 21 repeatedly.

Until the cows come home..

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