Dojo
Admin
Number of posts : 154
Location : Probably somewhere near a computer
Registration date : 2008-08-12
 | | Subject: Lesson 1, Problem 1 Fri Aug 15, 2008 6:37 pm | |
| 1) How many numbers are there from:
a) 2~20?
b) 7~16?
c) 4~13? | |
|
herefishyfishy1
Developer
Number of posts : 36
Age : 29
Location : An insignificant little blue-green planet 93 million miles from the sun Sol.
Registration date : 2008-08-16
| | Subject: Re: Lesson 1, Problem 1 Sat Aug 16, 2008 7:36 am | |
| Wait, can we post the answers here? | |
|
isabella2296
Admin
Number of posts : 45
Location : You'd really like to know, wouldn't you?
Registration date : 2008-08-16
| | Subject: Re: Lesson 1, Problem 1 Sat Aug 16, 2008 7:57 am | |
| 1) 20 - 2 + 1 = 19
2) 16 - 7 + 1 = 10
3) 13 - 4 + 1 = 10 | |
|
Dojo
Admin
Number of posts : 154
Location : Probably somewhere near a computer
Registration date : 2008-08-12
| | Subject: Re: Lesson 1, Problem 1 Sat Aug 16, 2008 12:59 pm | |
| @ fish yes
@ izzy sure thats one way but in my opinion theres a faster way. | |
|
AIME15
Hardcore TMF user
Number of posts : 163
Age : 27
Location : Pleasanton, CA
Registration date : 2008-08-13
| | Subject: Re: Lesson 1, Problem 1 Sat Aug 16, 2008 1:37 pm | |
| - Dojo wrote:
- 1) How many numbers are there from:
a) 2~20?
b) 7~16?
c) 4~13? a) subtract one from the whole thing to get 1-19, so 19. b) subtrac 6 from the whole lthing to get 1-10, so 10 c) subtract 3 from whole thing to get 1-10, so 10. | |
|
Sponsored content
| | Subject: Re: Lesson 1, Problem 1 | |
| |
|
