Can you replace the question mark with the correct number?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Why do you find that most of the buildings are deprived of the 13th floor?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?