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 what is  the probability that a student gets at least a C grade?

A

0.35

B

0.15

C

0.50

D

0.65

Solution

## The correct option is D 0.65 Probability that a student gets atleast a C grade = (Probability of getting grade A + Probability of getting grade B + Probability of getting grade C) = 0.2 + 0.3 + 0.15 = 0.65Mathematics

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