If n is a positive integer and (n+1)*(n+3) is odd, then (n+2)*(n+4) must be a multiple of?
A) 3
B) 5
C) 6
D) 8
E) 16
in problems like these, to determine the multiple do you put it in prime factor form or do you see its divisibility? because in other problems like if z is a multiple of x and y, then it must be a multiple of, it's solved by the LCM
Thanks ahead
A) 3
B) 5
C) 6
D) 8
E) 16
in problems like these, to determine the multiple do you put it in prime factor form or do you see its divisibility? because in other problems like if z is a multiple of x and y, then it must be a multiple of, it's solved by the LCM
Thanks ahead
