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Exam GRE Section 2 Quantitative All Questions

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Exam GRE Section 2 Quantitative topic 2 question 24 discussion

Actual exam question from Test Prep's GRE Section 2 Quantitative
Question #: 24
Topic #: 2
[All GRE Section 2 Quantitative Questions]

SIMULATION -
Shown below is a correct problem in addition, with R and S representing different digits.
7R

RS -

RR -

What is the value of S?

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Suggested Answer: Explanation
First, notice that R must equal either 1 or 2; otherwise, the sum of the three numbers would greatly exceed 117.Assuming R = 1, the "ones" column tells us that the value of S would necessarily be 5. But the "tens" column would not add up correctly. Hence, R must equal 2 and, accordingly, S must equal 3.

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MHALLAQ
10 months, 4 weeks ago
I think the question is incomplete!
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