Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

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

Which flower has two lips?

What is harder to catch the faster you run?

How many times in a given day, minutes and hour clock comes in a straight line ?

Which famous Hollywood movie name is hidden in the below rebus?

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

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

There was a strange boy who was born before his father. How can this be possible?