I need help!

• Sep 29th 2006, 12:43 AM
Mathildechina
I need help!
Hello everyone!
I have a tricky one. I can't find the answer. Do you have an answer for me?

1. how can you obtain 10000 by adding/substracting/dividing/multiplying (whatever calcul) with only the number 9?

thank you very much!
• Sep 29th 2006, 01:02 AM
CaptainBlack
Quote:

Originally Posted by Mathildechina
Hello everyone!
I have a tricky one. I can't find the answer. Do you have an answer for me?

1. how can you obtain 10000 by adding/substracting/dividing/multiplying (whatever calcul) with only the number 9?

thank you very much!

(9+9/9) (9+9/9) (9+9/9) (9+9/9)

or are brackets forbidden as well?

RonL
• Sep 29th 2006, 06:52 PM
Mathildechina
Nines
Thank you very much for your help, that's what i found too after a while.

I have another tricky one which is bothering me a lot :
Three guys are traveling in china and stop by a hotel. The hotel director announces the rooms' prices. A room for 3 is 30 RMB. They accept and each pays 10rmb. But the director suddenly realizes that he made a mistake. The room for 3 people was only 25rmb. Honest but not too much, he decides to give 1rmb back to each of the 3 guys and to keep the 2rmb resting for himself. So he gives back 3rmb et keeps 2. as a total the 3 guys will have paid only 9rmb each for the rent of the room.
The tricky thing : 3x9=27rmb. and 25rmb+3rmb=28rmb
where is the missing RMB?where did it disappeared?how is it possible

If you have an answer, i ll be really grateful!
thanks
• Sep 30th 2006, 11:32 PM
CaptainBlack
Quote:

Originally Posted by Mathildechina
Thank you very much for your help, that's what i found too after a while.

I have another tricky one which is bothering me a lot :
Three guys are traveling in china and stop by a hotel. The hotel director announces the rooms' prices. A room for 3 is 30 RMB. They accept and each pays 10rmb. But the director suddenly realizes that he made a mistake. The room for 3 people was only 25rmb. Honest but not too much, he decides to give 1rmb back to each of the 3 guys and to keep the 2rmb resting for himself. So he gives back 3rmb et keeps 2. as a total the 3 guys will have paid only 9rmb each for the rent of the room.
The tricky thing : 3x9=27rmb. and 25rmb+3rmb=28rmb
where is the missing RMB?where did it disappeared?how is it possible

If you have an answer, i ll be really grateful!
thanks

This is the missing dollar problem.

RonL
• Oct 1st 2006, 06:39 AM
ThePerfectHacker
Quote:

Originally Posted by CaptainBlack
This is the missing dollar problem.

RonL

More appropraitely called, "how money is spend in USSR".
• Oct 1st 2006, 07:34 AM
CaptainBlack
Quote:

Originally Posted by ThePerfectHacker
More appropraitely called, "how money is spend in USSR".

"how money was spend in USSR"

RonL