Question

If z - 3 is an odd number, which one of the following must be an odd number ?

Answer 1

Option C) is correct z +3 is also an odd number

z- 3 is odd number,

What is odd number?

odd number are given as 1, 3, 5, 7, 9,11,.. etc.

since z - 3 odd number

mean while
if we add 3 to z will also be the odd number cause subtracting 3 twice from z-3 returns the reverse value i.e.
so z + 3 also an odd number.

Thus, z +3 is also an odd number

Learn more about odd numbers here
brainly.com/question/17178884

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Answer 2

C). z + 3 would also be an odd number