Tuesday, 29 May 2012

SMO 2012 (Senior Section) Answers

SMO 2012 Senior Special Round Participants List
COP for Special Round - 11, about 6.9% (~195/2820 participants) selected

SMO 2012 (Senior) Questions
1. D
2. E
3. C
4. C
5. D
6. B
7. C
8. D
9. C
10. D
11. 2011
12. 6
13. 512
14. 4 (revised)
15. 2
16. 2220
17. 9
18. 17
19. 54
20. 2
21. 2028
22. 665
23. 45
24. 4
25. 384
26. 10
27. 14 / 3432 (*3432)
28. 1
29. 8
30. 40460
31. 30
32. 3
33. 105
34. 59
35. 5
Most answers are contributed by Lim Jeck and Lim Min, with some inputs from cbox messages. Thanks to all who contributed :)
*Answers updated on 1 Sep 2012, after checking the Solution Book

 SMO (Senior) Previous Years' Cut-off Points (Inclusive of Round 2 scores)
Update: 2012 Gold (24), Silver (11), Bronze (8), HM (7), Round 2(11)
2011 Gold (21), Silver (15), Bronze (10), HM (9), Round 2 (~15), Top 30 (27)
2010 Gold (26), Silver (10), Bronze (7), HM (6)
2009 Gold (19-23), Silver (10), Bronze (7), HM (6)
2008 Gold (27-28), Silver (15), Bronze (10), HM (9)
2007 Gold (29-30), Silver (16), Bronze (12), HM (10)
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9 comments:

  1. Anonymous29 May 2012 at 16:43

    Why is qn27 14

    ReplyDelete
  2. Le Van Canh29 May 2012 at 17:35

    I think the question 28 the answer is 1

    ReplyDelete
  3. Anonymous29 May 2012 at 18:46

    think Qn 23 is 15, 10,5.

    ReplyDelete
  4. Anonymous29 May 2012 at 19:23

    think i flunked ;(

    ReplyDelete
  5. Le Van Canh29 May 2012 at 20:30

    Do you think that 13 is enough for the 2nd round?

    ReplyDelete
  6. Anonymous29 May 2012 at 23:13

    hmm i got 2660 for q27. maybe we interpreted the question differently

    ReplyDelete
  7. Anonymous31 May 2012 at 10:58

    @unknown: should be, last year's COP was 15 and this year's was harder.

    ReplyDelete
  8. Anonymous1 June 2012 at 14:23

    I still think that the answer to 14 is 4. By quadratic formula the roots are m/2 and 6/(m-1). So only -2,0,2,4 work.

    ReplyDelete
  9. smo senior4 June 2012 at 08:20

    Solutions to selected questions from SMO 2012 (Senior).

    Q10.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=482003

    Q11.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=481779

    Q15.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=481877

    Q20.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=481786

    Q21.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=481619

    Q28.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=481790

    Q32.
    http://www.artofproblemsolving.com/Forum/viewtopic.php?f=150&t=481764

    ReplyDelete