An experiment was carried out on a lot of 20 bulbs. It was found that 15 bulbs are non-defective. If we want to find the probability of getting a defective bulb, what is the number of trials where the event happened?
A
4
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B
15
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C
5
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D
10
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Solution
The correct option is C 5 The event here is getting a bulb that is defective. Out of the 20 bulbs, 15 are non-defective. This means, 5 are defective. Therefore, the number of trials where the event took place is 5.