First you bring the chicken over. Then you go back without the chicken. Then you bring the chicken food over and take the chicken back. Then bring the fox over leave him there with the chicken food and go get the chicken!

25

The wise man told them to switch camels.

"143"
Represents the number of letters in each word of the phrase.

None. There is no F in "that".

311311222110

A mosquito.

Lip.
(When you say Mother
Your lips touch each other
That's not the case when you say Father)

The correct password is “Seven”.
“Twelve” consists of 6 letters T w e l v e hence the password is “Six”. “Six” consists of 3 letters S i x hence the password is “Three”. “Sixteen” consists of 7 letters S i x t e e n hence the correct password should be “Seven”.

Elastic, because it stretches!

The answer is either daughter or son-in-law, depending on whether the speaker is female or male.

Fire.