Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

The answer I give is yes, but what I mean is no. What was the question?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

How can you write nineteen in a manner that if we take out one, it becomes twenty?