Free Practice Question
PS · Problem Solving
705-805
Number Properties
Peter has two fair six-sided dice. One is labeled with the first six prime numbers, and the other with their reciprocals. If he rolls both dice once, what is the probability that the product of the resulting numbers is NOT a terminating decimal? (A terminating decimal is any decimal that has only a finite number of nonzero digits. For example, 24, 0.82, and 5.096 are three terminating decimals.)
Answer Choices
Correct answer marked belowA
1/36
B
1/6
5/9
Correct
D
2/3
E
5/6
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Explanation
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Sign in to commentWhat this question tests
What it tests
Your command of divisibility, primes, factors, parity, and how the GMAT tests properties of integers.
Common trap
Forgetting that 1 is not prime, that 0 is divisible by every integer, or that negative numbers flip your assumptions.
Details
Difficulty
705-805
Type
PS
Category