2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Which is the rope you never skip with?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

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?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?