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

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

My location can be determined by the below rebus.
So where am i ?

What is the fastest way to double your money?

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?