+0  
 
+2
112
1
avatar+3270 

An annoyed teacher asked her student to do the following:

(1) Start with the number 12. Go to step (2).
(2) Take the negative of the number reached at the end of the previous step. Go to step (3).
(3) Add 1 to the number reached at the end of the previous step. Go to step (4).
(4) Go back to step (2) unless you have already gone through step (3) a hundred times; if you have gone through step (3) a hundred times already, tell the teacher the last number you reached.

To the teacher's surprise, the student gave her the correct final answer within a minute. What was it?

tertre  Apr 4, 2018
 #1
avatar
+1

I will assume that "taking the negative of a negative number = positive number". If this is what is meant, then going through step-3 100 times[even number of times], the number remains the original number, or 12 in this case. That is my take!.

Guest Apr 4, 2018

15 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.