Bunuel wrote:
If r is between –1 and 0, then which of the following is true?
A. \(r^5 < r^6 < r^7\)
B. \(r^5 < 0 < r^7\)
C. \(r^7 < r^6 < r^5\)
D. \(r^7 < r^5 < r^6\)
E. \(r^3 < r^7 < r^6\)
Solving the problem conceptually
we know that\(r\) is negative, hence\(r\) will be greatest when power is even. So choiceA ,B &C areout
Again as\(r\) is negative and greater than\(-1\) i.e a negative proper fraction, higher powers of\(r\) will be greater than the lower powers, So optionD isout .
Answer-E
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