Question

A number is chosen from 11 to 90.find the probability than the number is:
1) A number divisible by 5
2) A one digit number
3) A square number
4) An odd number

Answer 1

Step-by-step explanation:

Probability = no. of favourable outcome / Total no of outcomes

1) Total no divisible by 5 from 11 to 90 = 16

Total no from 11 to 90 = 80

P = 16 / 80

P = 1 / 5

2) P ( one digit no ) = 0 / 80 = 0

3) square no 16,25,36,49,64 = 5

P( sqaure no) = 5 / 80 = 1 / 16

4) Odd number = 40 / 80 = 1 / 2

Answer 2

Answer:

1) probability of getting a number divisible by 5 =16/80

2) probability of getting a one digit number =0/80=0

3) probability of getting a square number= 16,15,36,49,64,81=6/80

4) probability of getting a odd number = 49/80

hope it is correct