Free Practice Question
PS · Problem Solving
sub-505
Inequalities
If 0≤x≤5 and y<10 which of these can be a value of xy?
I. -2
II. 0
III. 50
Answer Choices
Correct answer marked belowA
I only
B
II only
C
II only
I & II only
Correct
E
I and III only
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Explanation
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What it tests
Your ability to solve and combine linear inequalities and reason about ranges of values.
Common trap
Failing to flip the inequality sign when multiplying or dividing by a negative, or missing an inclusive/exclusive endpoint.
Details
Difficulty
sub-505
Type
PS
Category