What is the Surname of Barbie Doll?

A cat, a dog and a monkey were stolen. 3 suspects got caught: Harish, Manoj and Tarun. All we know is each person stole one animal, but we do not know who stole which. Here are the investigation statements. Harish said: Tarun stole the cat. Manoj said: Tarun stole the dog. Tarun said: They both were lying. I did not steal the cat or the dog. Later on, the police found out the man who stole the monkey told a lie. The man who stole the cat told the truth. Can you find out who stole which?

What is the fastest way to double your money?

Prove that twice of ten is the same as twice of eleven.

What have one eye but still cannot see?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Where do you go to learn how to make ice cream?

What 5-letter word typed in all capital letters can be read the same upside down?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Why Wine Glass Stem is so long?