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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.
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This question stem suggests that
two Number Properties concepts will be central to solving this problem.
What are they? |
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1:
2:
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We have identified the two Number
Properties concepts with which we're dealing. Now we must figure out
how they apply to the question at hand. Our first rule involves odd/even
number combinations. Which of the following odd/even combinations
results in an odd number? Select all combinations that apply and then
click Continue. |
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Our second rule involves prime numbers.
What do we know about the properties of prime numbers? Use your knowledge
of prime numbers to complete the rule below, and then click Continue. |
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Now use what we've learned about
x and y to evaluate each statement. Since each statement
appears in the answer choices the same number of times, let's begin
with the statement that seems easiest to handle. Statement II involves
simple subtraction, so let's begin with this statement. Select the
correct answer below, and then click Continue. |
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II. x – y is
odd
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Statement II CAN be true |
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Statement II CANNOT be true |
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At this point it looks like we will
need to evaluate both of the remaining statements to get the correct
answer. Let's try Statement I next. Select the correct answer below,
and then click Continue. |
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