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In a box of 100 electric bulbs, 8 bulbs are defective. One bulb is taken out at random from the box. What is the probability that the bulb drawn is not defective?
  • a)
    2/25
  • b)
    1/4
  • c)
    23/25
  • d)
    1/25
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In a box of 100 electric bulbs, 8 bulbs are defective. One bulb is tak...
Total no. of electric bulbs = 100
No. of defective bulbs = 8
No. of bulbs which are not defective = 100 – 8 = 92
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Most Upvoted Answer
In a box of 100 electric bulbs, 8 bulbs are defective. One bulb is tak...
To find the probability that the bulb drawn is not defective, we need to determine the number of non-defective bulbs and divide it by the total number of bulbs.

Number of non-defective bulbs = Total number of bulbs - Number of defective bulbs

Given that there are 100 bulbs in total and 8 of them are defective, we can calculate the number of non-defective bulbs as follows:

Number of non-defective bulbs = 100 - 8 = 92

Therefore, there are 92 non-defective bulbs in the box.

Now, we can find the probability of drawing a non-defective bulb by dividing the number of non-defective bulbs by the total number of bulbs:

Probability of drawing a non-defective bulb = Number of non-defective bulbs / Total number of bulbs

Probability of drawing a non-defective bulb = 92 / 100

Simplifying the fraction, we get:

Probability of drawing a non-defective bulb = 23 / 25

So, the correct answer is option 'C' which is 23/25.

In summary:
- Number of non-defective bulbs = Total number of bulbs - Number of defective bulbs
- Number of non-defective bulbs = 100 - 8 = 92
- Probability of drawing a non-defective bulb = Number of non-defective bulbs / Total number of bulbs
- Probability of drawing a non-defective bulb = 92 / 100
- Simplifying the fraction, Probability of drawing a non-defective bulb = 23 / 25
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In a box of 100 electric bulbs, 8 bulbs are defective. One bulb is taken out at random from the box. What is the probability that the bulb drawn is not defective?a)2/25b)1/4c)23/25d)1/25Correct answer is option 'C'. Can you explain this answer?
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