Free Practice Question
PS · Problem Solving
655-705
Divisibility/Multiples/Factors
What is the total number of prime factors in 90!?
Answer Choices
Correct answer marked belowA
22
B
23
24
Correct
D
25
E
26
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Explanation
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Official Explanation
Official
To determine how many prime factors are in 90!, we note that 90! is the product of all integers from 1 to 90. Therefore, it includes all prime numbers that are less…
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Comments
1
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A
AnshulMar 11, 2024
appreciated!
What this question tests
What it tests
Your understanding of divisibility rules, least common multiples, and greatest common factors.
Common trap
Forgetting that 1 is not prime and that every integer divides 0.
Details
Difficulty
655-705
Type
PS
Category