Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

What number divided by 4 is the same as that number minus 4?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

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.

How many sides does a circle have?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?