Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Through your logical capabilities, can you make 7 an even?

Find the next number in the series.
1 10 24 43 67 ?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

If eleven plus two equals one, what does nine plus five equal?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

How many letters are in the alphabet?

Can you identify if it's a murder or a suicide ?