What has many teeth, but cannot bite?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What can you catch but never throw?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

A man dies of old age on his 25 birthday. How is this possible?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

The answer I give is yes, but what I mean is no. What was the question?