Question

out of 10 student, the favorite drink of 7 is Coke and the favorite drink of of the rest is fanta. a teacher picks a student at random. what is the probability that the favorite drink of the student is (a) Coke (b) fanta (c) neither Coke nor fanta (d) either Coke or fanta​

Answer 1

a) 0.7

b) 0.3

c) 0

d) 1

Explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

(a) Coke

Out of 10, 7. So

`p = (7)/(10) = 0.7`

(b) fanta

3 out of 10. So

`p = (3)/(10) = 0.3`

(c) neither Coke nor fanta

7 Coke, 3 fanta, so all 10 are either coke or fanta. Thus:

`p = (0)/(10) = 0`

(d) either Coke or fanta​

All 10. Thus:

`p = (10)/(10) = 1`