Why Aeroplane windows are round?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

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?

When it is alive we sing, when it is dead we clap our hands. What is it?

I can write cow in 13 letters.

Can You?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?