Question

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears:
(i) a two digit number
(ii) a perfect square number
(iii) a number divisible by 5.

Answer 1

Answer:

(i) 8/9

(ii) 1/10

(iii) 1/18

Step-by-step explanation:

(i) 80/90 = 8/9

(ii) 9/90 = 1/10

(iii) 5/90 = 1/18

Answer 2

your ans is 1/5 ......

9/10

1/10