Question

13. Zahra likes to go rock climbing with her friends. In the past, Zahra has climbed to the top of the

wall 7 times in 28 attempts. Determine the odds against Zahra climbing to the top.
A. 3:1
B. 4:1
C. 3:11
D. 3:4

Answer 1

the odds against Zahra climbing to the top are,

B. 4:1

Explanation:

Since she has climbed 7 times in 28 attempts,

the probability of a successful climb is,

P = 7/28

P = 1/4

So, the odds against Zahra climbing to the top are 4:1