Question

A particular zebra is the 10th fastest animal in its herd and also

the 10th slowest animal in its hard. If every zebra in the herd is
of a different speed, then how many zebra are there in the herd?

Answer 1

19

Explanation:

The zebra is the 10th fastest, so there are 9 zebras that are faster.

It's also the 10th slowest, so there are 9 zebras that are slower.

The total number of zebras is therefore 9 + 1 + 9 = 19.