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Question

Out of 50 students in a class taking a test, 35 of them passed whereas the other 15 failed. What is the probability that a student selected at random passed the test?


A
0.15
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B
0.3
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C
0.35
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D
0.7
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Solution

The correct option is D 0.7

Total number of students in a class = 50

Number of students who passed the test = 35

P(P) = Number of favourable outcomesTotal number of possible outcomes

where P(P) = Probability that student passed the test

=Number of students who passed the testTotal number of students in a class

= 3550=0.7


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