+0  
 
0
803
1
avatar+693 

http://prntscr.com/ljuwnh

 Nov 18, 2018
 #1
avatar+1253 
0

 Two consecutive numbers means one number is even, and one is odd.

 \(even\times even=even\) and \(odd\times odd=odd\) .

 Now, \(even-odd\) or \(odd-even\) both equal odd, so Tina is right.

 

You are very welcome!

:P

 Nov 18, 2018

2 Online Users

avatar
avatar