Topic : Number-Even, Odd
1.
2.
from: category_eng

1.

Ans: C

2.Understanding
(1)3p+15 is even (2)3p+8 is odd

Ans: D

1.
2k: even
2.

3.
Make a relationship between condition and question
4.

5.

6.
(1) p is the middle. (2)distance between t and m.
7.

8.
Odd*Odd= Odd
1. C
2k: even
2. B
3. D
Make a relationship between condition and question
4. B
5. D
6. E
(1) p is the middle. (2)distance between t and m.
7. D
8. C
Odd*Odd= Odd
Let say Z^2 is even. Then Z is even so.. Z-1 is odd, which means (Z-1)^2 is also odd.
So from both (1) and (2), x-y is odd.