A simple peasant is has bought a number of camels and is taking them to his farm. As he rides contentedly along he counts them, he counts 29. He was sure he had bought 30 camel, so in alarm he jumps off his camel and counts the camels gain. To his delight there are 30. Half an hour later, he counts his camels and once more there are just 29. Confused, he climbs off his camel and counts again. Once more there are 30. Can you explain?

“He lost one camel while riding.”

If he lost a camel, he would not count 30 when he dismounts. The riddle implies he consistently counts 30 when he is off the camel.

“He has a visual impairment that affects his counting.”

The riddle does not suggest any physical condition affecting his ability to count; instead, it highlights a simple oversight related to his position.

“The camels are moving too fast for him to count them correctly.”

The riddle states that he counts 29 while riding, which suggests he is able to see and count the camels, just not the one he is riding.