When can we add 2 to 11 and get 1 as the correct answer?

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?

I know a nine-letter word having only one vowel.
Do you ?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Why is 6 afraid of 7?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What is the fastest way to double your money?

What four weights can be used to balance from 1 to 30 pounds?

There are two arch enemies Messi and Ronaldo who hate each other to an extreme. One day both were going together and a Jeanie appeared in front of them. Jeanie grants 3 wishes to Ronaldo and one to Messi.

Messi replied smartly 'Give me twice whatever Ronaldo demands'.

Ronaldo asked his 1st wish 'Give me 10000 billion dollars. Soon Messi gets 2000 billion dollars.
Ronaldo asked for his 2nd wish 'Give me one mansion in every country in the world. Soon Messi gets two mansions in every country of the world?

What should be Ronaldo's third wish?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?