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 a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Can you solve below mathematical equation?

2^1234 - 2^1233

What is full of holes but still holds water?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Which is faster, Heat or Cold ? Explain.

Can you identify if it's a murder or a suicide ?

What is the largest number you can write with just 3 digits?

What happened when the wheel was invented?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?