Free Practice Question
PS · Problem Solving
sub-505
Divisibility/Multiples/Factors
A number is selected at random from the first 120 positive integers. What is the probability that it is a multiple of 4?
Answer Choices
Correct answer marked belowA
29/120
B
40/120
1/4
Correct
D
31/120
E
2/3
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Explanation
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Official Explanation
Official
A number is selected at random from the first 120 positive integers. We need to find the probability that it is a multiple of 4. Using the formula: 1 + [ {last multiple of increment in the given range - first multiple of the increment in the…
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Comments
2
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A
AshNov 24, 2024
Thanks for sharingThank you for sharing!!thanks for sharing
O
OjasMay 2, 2025
Great!
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
sub-505
Type
PS
Category