GMAT Practice Question Set #53 (Question 157-159)

Problem Solving Question #159: Quality Control on Glass Smartphones  
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A manufacturer is using glass as the surface for the multi-touch screen of its smartphone. The
glass on the manufactured phone has a 5% probability of not passing quality control tests. The
quality control manager bundles the smartphone in groups of 10. If that bundle has any
smartphone that does not pass the quality control test, the entire bundle of 10 is rejected.
 

What is the probability that a smartphone bundle that will be rejected by quality control?

(A)

0.25

(B)

.0510

(C)

1-0.9510

(D)

1-0.0510

(E)

0.9510

Video Explanation

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