Can you count the number of lines in the below picture?

Spot what is wrong here in below Picture?

Which five letter word can be added at the end of below word to form a
valid word?

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The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?