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In a sample survey of 645 people , it wa...

In a sample survey of `645` people , it was found that `516` people have a high school certificate . If a person is chosen at random , what is the probability that he/she has a high school certificate ?

A

`(1)/(2)`

B

`(3)/(5)`

C

`(7)/(10)`

D

`(4)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
D
Let E be the event that the chosen person has a high school certificates . Then ,
`P(E) = ("number of people having high school certificate")/("total number of people")`
`= (516)/(645) = (4)/(5)` . [HCF (516 , 645) = 129. ]
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