If |A| > 19, which of the following could NOT be equal to A ?

Correct answer marked below

Correct

−20

−24

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Comments

SamyukthaJun 8

easy one, just think about distance from zero. 18 is too close

SparshJun 17

yep, anything between -19 and 19 is out

Krishanu3d ago

wait why is -20 ok but 18 not? absolute value of -20 is 20 which is >19. i overthought this lol

Ievingjust now

the bars mean distance, so sign doesnt matter. 18 gives |18|=18 which fails

KaseyApr 20

thanks, helpful reminder that |A|>19 means A is more than 19 away from 0 in either direction

What this question tests

Your ability to solve and combine linear inequalities and reason about ranges of values.

Failing to flip the inequality sign when multiplying or dividing by a negative, or missing an inclusive/exclusive endpoint.