Question on: JAMB Mathematics - 1992
Simplify \(\frac{(1.25 \times 10^{-4}) \times (2.0 \times 10^{-1})}{(6.25 \times 10^5)}\)
A
4.0 x 10-3
B
5.0 x 10-2
C
2.0 x 10-1
D
5.0 x 10-3
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Correct Option: A
\(\frac{(1.25 \times 10^{-4}) \times (2.0 \times 10^{-1})}{(6.25 \times 10^5)}\) = \(\frac{1.25 \times 2}{6.25}\) x 104 - 1 - 5
\(\frac{2.50}{6.25}\) x 10-2 = \(\frac{250}{625}\) x 10-2
0.4 x 10-2 = 4.0 x 10-3
\(\frac{2.50}{6.25}\) x 10-2 = \(\frac{250}{625}\) x 10-2
0.4 x 10-2 = 4.0 x 10-3
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