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?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Find the next number in the series below.

6 18 270 72090 ?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

Can you find out the number that should replace the question mark with a valid reason?