Question

An urn contains 60 blue pens and 40 red pens. Half of the pens of each one is defective. If one pen is chosen at random, What is the probability that it is a defective or a red pen ?

Answer 1

It will be an red defective pen.

Please mark as Brainliest.

Answer 2

The probability that it is a defective or a red pen is 0.9

Step-by-step explanation:

No. of blue pens = 60

No. of red pens = 40

Total No. of pens = 100

Half of the pens of each one is defective.

Defective blue pens = 30

Defective red pens = 20

So, Total no. of defective pens = 30+20=50

1 pen is drawn

Probability of getting defective pen =$\frac{\text{No. of defective pens}}{\text{Total no. of pens}}=\frac{50}[100}$

Probability of getting red pen =$\frac{\text{No. of red pens}}{\text{Total no. of pens}}=\frac{40}{100}$

So, the probability that it is a defective or a red pen =$\frac{50}{100}+\frac{40}{100}=\frac{90}{100}=\frac{9}{10}=0.9$

Hence the probability that it is a defective or a red pen is 0.9

#Learn more:

A box of 12 dozen pens contains a defective pens . One pen is take n out of random.What is the probablity that the pen taken out is defective or non defective​

https://brainly.in/question/12422579