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?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

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

Who am I?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

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

Why Wine Glass Stem is so long?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?