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1990 AJHSME Problems/Problem 5

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Problem

Which of the following is closest to the product (.48017)(.48017)(.48017)?

\text{(A)}\ 0.011 \qquad \text{(B)}\ 0.110 \qquad \text{(C)}\ 1.10 \qquad \text{(D)}\ 11.0 \qquad \text{(E)}\ 110

Solution

Clearly, .4<.48017<.5 Since the function f(x)=x^3 is strictly increasing, we can say that .4^3<.48017^3<.5^3 from which it follows that \text{A} is much too small and \text{C} is much too large, so \boxed{\text{B}} is the answer.

See Also

1990 AJHSME (ProblemsResources)
Preceded by
Problem 4
Followed by
Problem 6
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