Lesson: Intermediate Problem Solving - 16t03

The Roman Numeral Question, continued

[Page 16 of 27]

In which of the following pairs are the two numbers equivalent?

I. and
II. and
III. and 243

None
II only
III only
I and II
I, II, and III
Which statement would you evaluate first? Select the radio button for the statement that you might evaluate first, then click Continue.

  Statement I Statement II Statement III

Are the following two numbers equivalent? Select the correct answer and click Continue.

II. and


  Yes No    

A negative exponent indicates a reciprocal. The base in this term, 7, is positive, so its reciprocal should be positive as well. is equal to , not .

So, we can eliminate any choice that contains Statement II, which are Choices (B), (D), and (E).

We're left with Choices (A) and (C). Since Statement III alone appears in Choice (C), we only need to evaluate this remaining statement to determine the correct answer.

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