Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

If your uncle’s sister is not your aunt, what relation is she to you?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What will you call your mother's brother's brother-in-law?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

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?