Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

How many letters are in the alphabet?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Find the value of "?" in the ball picture Riddle below:

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?