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?

Why 1729 is a magic number? Answer Logically.

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Which country gets ill every time?

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.

If 1+9+8=1, what is 2+8+9?

Buy me, smell me or deliver me, I do not change.

Who am I?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What is the word or phrase below?
R | E | A | D

When we see 2 but call 10?