Picking Numbers works well on many Number Properties questions, but sometimes it's necessary to know Number Property rules in order to solve a problem. At other times, familiarity with the rules will help get you to the correct answer more efficiently. For the following Roman Numeral question, we will focus on the Number Property rules that are being tested. Review the question and then proceed to the task below.
If the sum of prime numbers x and y is an odd number, which of the following CANNOT be true?
I. y2 is odd II. x – y is odd III. is an integer
1: Absolute Value Properties of -1, 0, 1 Odd/Even Rules Operation Rules Factors, Primes, Divisibility
2: Absolute Value Properties of -1, 0, 1 Odd/Even Rules Operation Rules Factors, Primes, Divisibility
Which of the following odd/even combinations results in an odd number?
even + even
odd + odd
even + odd (or odd + even)
is the only prime number; all other prime numbers are .
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