Numbers from 1, 2, 3….. 35 are a total of 35.
Total no. of possible outcomes = 35
(i) Let E = event of getting a prime number
No. of favourable outcomes =11 {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31)
Probability, P(E) = Number of favourable outcomes/ Total number of outcomes
P(E) = 11/35
(ii) Let E = event of getting a number which is a multiple of 7
No. of favourable outcomes = 5 {7, 14, 21, 28, 35}
Probability, P(E) = Number of favourable outcomes/ Total number of outcomes
P(E) = 5/35 = 1/7
(iii) Let E = Event of getting no which is multiple of 3 or 5
No. of favourable outcomes = 16 {3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 5, 10, 20, 25, 35}
Probability, P(E) = Number of favourable outcomes/ Total number of outcomes
P(E) = 16/35