Replace the question mark with the correct number below.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

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?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Count the number of triangles in the picture below:

Who always enjoys poor health?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

It is always ahead of me yet I can never see it. What is it?

When monkey rotate the gear, which mark will be hit 1 or 2 ?