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Question

The probabilities of a student getting grade A, B, C and D are 0.2, 0.3, 0.15 and 0.35 respectively. Then the probability that a student gets at least C grade is:



Correct Answer
A

0.65

Your Answer
B

0.15

Your Answer
C

0.50

Your Answer
D

0.35


Solution

The correct option is A

0.65


Probability that a student gets atleast C grade = (Probability of getting grade A + Probability of getting grade B + Probability of getting grade C)
= 0.2 + 0.3 + 0.15 = 0.65

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