Quant Sample test (Medium section Sample 3 and 4)

GRE Quant Problem Solving
1

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Hello, everyone.

In this question, should it not be that x will be greater than (180/pi)? [ I did it using the length of an arc formula]

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Even in the solution video, greg says that E is the correct choice, however, when I took the test, it showed E as the wrong choice and 64 as the correct one. This needs to be fixed.

2
  1. Share your steps.
  2. I think the question in the test (if you took it originally) was a bit different?
3

We know, the length of an arch = 2πr (x/360)

According to the question,
2πr (x/360) > r

Now setting 2πr (x/360) = r
or, x = 180/ π = 57.32

so x must be greater than 57.32

The question in the video and in the test are the same, and even if they aren’t I cannot figure out how the result is 64.

4

Both fixed.