What is the riddle which can be asked all day with a different correct answer each time.

Can you solve below mathematical equation?

2^1234 - 2^1233

John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

What has 88 keys?

What is the relationship between these matchstick pictures below?

Can you count the number of triangles in the given figure?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?