What am I?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

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.

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?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What number comes next in the series?

5 15 5 18 5 24 14 20 _