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Question

# The probabilities of a student getting A, B, C and D grade are 0.35, 0.25, 0.35 and 0.05, then the probability that a student gets at most grade C is......

A
0.35
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B
0.4
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C
0.95
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D
0.65
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Solution

## The correct option is C 0.95 If 100 students take a test, then: 35 gets A 25 gets B 35 gets C 5 gets D at most got grade C" means, the student could have got grades A or B or C - 95 out of 100 gets at most C, so the probability of a student getting at most C is 95/100 = 0.95Answer (C) 0.95

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