Bunuel wrote:
A zoo has w wildebeests, y yaks, z zebras, and no other animals. If an animal is chosen at random from the zoo, is the probability of choosing a yak greater than the probability of choosing a zebra?
(1) y/(w + z) > 1/2
(2) z/(w + y) < 1/2
Kudos for a correct solution.
Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations
...
.jpg)
