Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

What does this mean?

CCCCCCC

By what process could you make a 'Tea-Table' into food?

What is full of holes but still holds water?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

How can you take 2 from 5 and leave 4?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

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