how to obtain specific numbers using some processes on given number?

Asked Apr 21 '17 at 12:33

Active Apr 21 '17 at 19:38

Viewed 46 times

With a natural number, the following processes can be used:

If number 55 is given, can the following numbers be obtained: 2003, 2004, 2005, 2006, 2007

((((( if we obtain number 32 then we can obtain any of this numbers: 2003, 2004, 2005, 2006, 2007 )))

THANKS ALOT

edited Apr 21 '17 at 19:38

asked Apr 21 '17 at 12:33

Omar Abu Asbe

What's the source of this problem, please? – Gerry Myerson Apr 21 '17 at 12:48
Can you obtain $27.5$ by dividing $55$ by $2$, even though that doesn't result in an integer? – Apr 21 '17 at 12:58
there is no source, just i got this question from a friend! – Omar Abu Asbe Apr 21 '17 at 16:04
no we cannot obtain 27.5 .. we just can obtain integer numbers. – Omar Abu Asbe Apr 21 '17 at 16:05
So, where did your friend get the question, please? – Gerry Myerson Apr 22 '17 at 13:33
it's from an mathematical Olympiad on our country – Omar Abu Asbe Apr 23 '17 at 21:48
the solution is with 27 steps .. we have to go from 55 to 32 then it's easy – Omar Abu Asbe Apr 23 '17 at 21:49
If you now know how to solve the problem, let me encourage you to write it up and post it as an answer, for anyone who comes along later. – Gerry Myerson Apr 24 '17 at 07:29
no i do not know, but i write an c# program to solve that problem, it's need 3^28 process to solve it. so it's taking so ling time
example: from 32 to 2003 : 32,320,3204,1602,16024,8012,4006,2003
– Omar Abu Asbe Apr 24 '17 at 11:55

0 Answers0