Mathematics
WAEC 2019
Evaluate: \(\frac{0.42 \div 2.5}{0.5 \times 2.95}\), leaving the answer in the standard form.
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A.
1.639 x 10\(^2\)
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B.
1.639 x 10\(^1\)
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C.
1.639 x 10\(^{-1}\)
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D.
1.639 x 10\(^{-2}\)
Correct Answer: Option C
Explanation
\(\frac{0.42 \div 2.5}{0.5 \times 2.05} = \frac{0.168}{1.025}\)
= 1.639 x 10\(^{-1}\)
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