What four weights can be used to balance from 1 to 30 pounds?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What number do you get when you multiply all of the numbers on a telephone's number pad?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

What is the last thing you take off before bed?

I am an odd number. Take away a letter and I become even. What number am I?

Find the next number in the series.
1 10 24 43 67 ?

I have no life, but I can die. What am I?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?