I am an odd number. Take away a letter and I become even. What number am I?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Can you make four (4) nines (9) equal 100?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

How can you tell a raw egg from a hard-boiled egg?

I am the fastest animal but cannot climb the tree. What am I?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.