It is unlikely that a topic will come up in both papers but it can happen. If you have a question worth a lot of marks on probability in paper 1 then it is not likely to come up in paper 2. However, I have done papers where there are questions of the same topic on both papers but these are not usually worth many marks.
I WANTED TO KNOW CAN 2 TOPICS COME UP ON BOTH PAPERS ( CALCULATOR AND NON-CALCULATOR ) ?
E.g IF PROBABILITY CAME UP IN PAPER 1 (CALCULATOR) DOES THIS MEAN IT WONT COME UP IN PAPER 2 (NON- CALCULATOR) ?
OR AM I WRONG?
Your example is very broad, for a specific topic like draw a cumulative frequency graph and estimate some answers from it..... that would only appear once but something as broad as 'probability' there'll probably be questions on both papers.
Mathswatch are very good at predicting what topics are most likely to come up on the second paper after the first one has happened. http://www.mathswatch.co.uk/
have a look at their site the day after your first exam.
Several teachers are also usually kind enough to post their educated opinions on it in the maths forum.
if you are doing the new spec or the old one it very unlikely that both questions will come up- ur teacher should have told you about what paper you will be doing but because you are doing linear the papers will properly be different ( one calculator one none calculator). im going to be doing a maths exam to in november 2011 but mine is modula