Sunday 1 August 2010

NMOS 2010 Special Round Answers

1. 20
2. 2
3. 15
4. 216
5. 154
6. 54
7. 25
8. 12
9. 38
10. 75
11. 542
12. 48
13. 108
14. 12
15. 65
16. 24
17. 40
18. 25
19. 4
20. 62

Note: many answers were contributed by Lim Min and Lim Jeck.
Lim Li - if you have different answers and you are sure that you are correct, please let me know.

14 comments:

Passer by said...

I think that Q16 is 23

Anonymous said...

Q16 is 24 and not 23. Lim Min and Lim Jeck have checked this question. Current age of Father=60, Mother=52, Helen=28, John=24, Lucy=22.

Lim Li

passer by said...

why mother=52 not 51

Anonymous said...

The question said that the current average age of the family, excluding Helen is 39.5 years old. If the mother is 51 and John is 23, then the current average age excluding Helen would be 39 years old instead which is wrong. So 51 is wrong.

LM

Passer by said...

hi afternoon ,How much marks to get gold for nmos this year

Anonymous said...

Hi, for Question 4, the answer should be 108.
As for Question 7, the answer should be 25.
Lastly, Question 17 I got a fraction so as the examiner said to round off if there are any answers with decimals, hence the answer I got was 42.

Orange

Anonymous said...

Yes, you are right about Qn 7. I have changed the answer to 25.

For Qn 4 and 17, our original answers are correct.

I think for Qn 4, you failed to consider that the horizontal row and vertical row may be switched as well, hence X2.

For Qn 17, the answer is a whole number. How do you even get a decimal?!

LM

Anonymous said...

ok, thanks a lot.

orange

Anonymous said...

lim li,did you even contribute any answers?i dont think so,you know?ha!!

Anonymous said...

step, I know that it is you. I did contribute 6 answers though.

lim li

stephenyeo said...

is it 6 answers or just qn 6?






step

Anonymous said...

lim li contributed qn 6,i thought she did not contribute anything.






potato head

Anonymous said...

answers are all coorrect

Anonymous said...

Q12 is 46