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An experiment...

Question

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.

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