Solution:

Both the prisoners and the astronauts are interested in the outer space.

Solution:

The man asked the king that he wanted to die of old age.

Solution:

Adam and Eve were the only people without navel. As they were not born out of a mother, they never had umbilical cords and thus never had navels.

Solution:

1/36

Explanation:
The number of possibilities for the first as well as the second dice are 6 and 6 respectively. Therefore the total possibilities or outcome are 6 * 6 = 36.
Out of 36 outcomes, we need only one case i.e. the first gives 2 and the second gives 5.
Therefore, the probability will be 1 on 36 or 1/36.

Solution:

XIX is the answer which refers to nineteen in roman numeric system. On taking out one i.e. I, we will get XX that is equal to twenty.

Solution:

There are 3 fruits (1 grapes, 1 apples, and 1 oranges).

Solution:

The Password.

Explanation:
Clues 2 and 5 are correct and rest are lies.

Solution:

I + IX = X

The equation read from the other side becomes X = XI + I which is false.

Solution:

Rhea will open just one present.
Cindy|Y - Y is the 25th alphabet
Duk|E - E is the 5th alphabet
Joh|N - N is the fifteenth alphabet
Rhe|A - A is the first alphabet

Solution:

40 balls

Solution:

The mules is moving in circular path and hence outside legs travels more distance than inner legs.