Question

It is known that in a box of 100 bulbs 7 are defective one bulb is taken out randomly what is the probability that it is a non defective bulb

Answer 1

Given:

It is known that in a box of 100 bulbs 7 are defective

To find:

One bulb is taken out randomly what is the probability that it is a non defective bulb

Solution:

From given, we have,

It is known that in a box of 100 bulbs 7 are defective

P (defective) = 7/100  

one bulb is taken out randomly what is the probability that it is a non defective bulb

P (defective) + P (non-defective) = 1

P (non-defective)  = 1 - P (defective)

P (non-defective)  = 1 - 7/100

P (non-defective)  = 93/100

Therefore, the probability that the bulb taken out randomly is a non defective bulb is 93/100

Answer 2

Step-by-step explanation:

7/100 is answer

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