Free Practice Question
PS · Problem Solving
705-805
Inequalities
If 1 <= P <= 40, how many values of P exist such that (P-1)! is not divisible by P?
Answer Choices
Correct answer marked belowA
9
B
10
C
11
13
Correct
E
15
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Explanation
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Sign in to commentWhat this question tests
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
705-805
Type
PS
Category