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?

When we see 2 but call 10?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

81 x 9 = 801. What must you do to make the this equation true?

What is both possible and impossible at the same time?

What has no start, end, or centre?