There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

What has a ring but no finger?

Find the next number in the sequence

5 12 24 36 ?

What is the word or phrase?

Why is a river so rich ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Find the missing letter in the last circle logically in the given below picture.

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?