Cow Counting

Riddle: There are seventeen all black cows, ten tan cows, and thirty seven black and white cows at the barn. Every Wednesday half of the population would be taken to the cellbarn to be sold, and that number would be replaced after all the cows are gone. How many cows get put in the barn when all of the cows are gone?

Answer: None! If there are 0 cows left, 0 cows will be replaced!

Source: https://www.riddles.com/index.php/3116

There are seventeen all black cows, ten tan cows, and thirty seven black and white cows at the barn. Every Wednesday half of the population would be taken to the cellbarn to be sold, and that number would be replaced after all the cows are gone. How many cows get put in the barn when all of the cows are gone? — Cow counting by Rhiana Patterson Riddle