Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

What does this mathematical rebus means ?

Can you count the number of triangles in the picture below?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

What seven-letter word has hundreds of letters in it?