Why is a river so rich ?

Can you find the company name in the pictogram below?

What is the Surname of Barbie Doll?

When we see 2 but call 10?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

Which five letter word can be added at the end of below word to form a
valid word?

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I cannot talk, but I always reply when spoken to. What am I?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?