AMC 10/12/A/B 2013 Discussion Thread

ilovediannaagron
Fri, 15 Mar 2013 16:38:47 +0000

the triangle fold one is 113: 39(sqrt 39)/25…look on aops

2 is 200(i missed it since i used stars and bars and got a bunch of extra cases )

14 I didn’t get but according to aops is 036.

Other answers:

1. (time) 150

2. (square 9/10 area one) 018

3. (rotate 90 degrees) 429

4. (cubic equation) 098

5. (counting question) 047

6. (rectangular prism) 041

7. (arcsin log question) 371

8. (complex roots 65 one) 080

9. (16, 15, 14 mod arithmetic one) 148

10. (equilateral hexagon) 021

11. (similar triangle recursion) 961

12. 272
overall I got 9 correct. do you think 126/9 is good enough for JMO???