There are 10000 cats in an animal shelter, the probability of a cat being nursed twice within 6 hours is 100%, and the probability of being nursed twice within 2 hours is 0%.

It is most likely

that a cat is being cared for, and 4 hours later she is licking herself another time.

The probability distribution

is linear.

The cats are cared for 1/10 hour.

What is the probability that no cat will care in one hour?