Question

From the numbers 1,3,5,7,9, 11, 15 a number is to be picked up at random. What is the probability
of choosing a number:
(a) less than 8
(b) 5 or more​

Answer 1

Answer:

Total no. of outcomes (1,3,5,7,9,11,15) = 7

Frequency of no. less than 8 (1,3,5,7) = 4

Frequency of no. equal to 5 or more (5,7,9,11,15) = 5

Prob. (e) = No. of favourable outcomes/Total no. of outcomes

(a) Prob. (no. less than 8) = 4/7

(b) Prob. (no. equal to 5 or more) = 5/7