Bunuel wrote:
Of the following, which is the closest approximation to \(\frac{32}{\sqrt{0.256}}=\) ?
A. 20
B. 30
C. 60
D. 200
E. 600
PS21251
We can save a lot of time by recognizing 0.256 ≈ 0.25, and that √0.25 = 0.5 (since 0.5² = 0.25)So, we get: \(\frac{32}{\sqrt{0.256}}≈ \frac{32}{\sqrt{0.25}} ≈ \frac{32}{0.5} ≈ 64\)
Answer: C _________________
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