Question

How many punctuation errors are found in the sentences below? Have you ever run in a relay race. If you imagine a relay race, then you'll understand how the Pony Express worked.

Answer 1

 There is suppose to be a question mark where you wrote "Have you ever run in a relay race." not a period.

Answer 2

Here's a corrected version: "Have you ever ran in a relay race? If you can imagine a relay race, then you'll understand how the Pony Express worked." Only one main punctuation error.