What is the fastest way to double your money?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

How can a man go eight days without sleep?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

What has lots of eyes, but can’t see?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?