Question

The probability 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 the student gets at least C grade is:

- 0.65
- 0.15
- 0.5
- 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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