Count the number of lines in the image below ?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Before Mount Everest was discovered, what was the highest mountain in the world?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you replace the question mark with the correct number in the below table sequence?

I am sure no one can have two things for dinner. what are they?

The centre of the third figure is empty. What digit should fit inside?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?