If the positive integer x is a multiple of 1 and the positive integer y is a multiple of 7, then xy ...
If the positive integer x is a multiple of 1 and the positive integer y is a multiple of 7, then xy must be a multiple of which of the following?
I. 7
II. 2
III. 3
Answer/Solution
I only
Steps/Work
x=1a
y=7b
xy=7ab
where a,b are integers
Hence , xy will always be divisible by 7 .
C is the answer.
y=7b
xy=7ab
where a,b are integers
Hence , xy will always be divisible by 7 .
C is the answer.