Question

In a society certain number of people worked for 3 campaigns. Some worked for 'Say No To Plastic' some 'Say No To Crackers' and remaining for 'Say No To Child Labor'. A person is selected at random. The probability of getting person from 1st campaign is 3/10 that of 2nd is 2/3 . Find the probability for 3rd campaign, if the number of persons in 2nd campaign was 20 find total number person involved.
⏩ ???? please answer as fast as possible

Answer 1

Answer:

Step-by-step explanation:

Say no to plastic - 3/10

Say no to crackers- 2/3

Say no to child labour =?

Total no. of people involved in second campaign =30

Let the total no.of people be x

2/3=20/x

Hence x= 30

Say no to plastic-

3/10=y/30

Hence y=9

Total no. of people in first two campaigns

is 29

Therefore

In the third campaign

The total no. of people in third campaign is 1/30

Hence this is the probability of third campaign.