What question can you never answer yes to?

There is something which you can be arrested for attempting but not for successfully completing.

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

What 5-letter word typed in all capital letters can be read the same upside down?

What does the below rebus riddle means?

The more it dries, the wetter it becomes. Can you tell what it is?

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

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Can you find the thief by just looking at the picture below?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.