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candela.tartiere
- Newbie | Next Rank: 10 Posts
- Posts: 8
- Joined: Sun Feb 17, 2013 1:46 am
IF K IS A POSITIVE INTEGER SUCH THAT K/3 IS AN EVEN INTEGER AND IS AN ODD INTEGER, WHICH OF THE FOLLOWING MUST BE TRUE?
1. K IS EVEN
2. (K/2)^2 IS EVEN
3. K/2 -K/3 IS ODD
A. 1 ONLY
B. 2 ONLY
C. 3 ONLY
D. 1 AND 2
E. 1 AND 3
I solved this exercise by using two examples, but I would like to know the theory behind to solve it.
1. K IS EVEN
2. (K/2)^2 IS EVEN
3. K/2 -K/3 IS ODD
A. 1 ONLY
B. 2 ONLY
C. 3 ONLY
D. 1 AND 2
E. 1 AND 3
I solved this exercise by using two examples, but I would like to know the theory behind to solve it.
