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Simplify and express in standard form frac 0 00... - JAMB Mathematics 1990 Question

Simplify and express in standard form \(\frac{0.00275 \times 0.0064}{0.025 \times 0.08}\)
A
8.8 x 10-1
B
8.8 x 10-2
C
8.8 x 10-3
D
8.8 x 103
correct option: c

(\frac{0.00275 \times 0.0064}{0.025 \times 0.08})

Removing the decimals = (\frac{275 \times 64}{2500 \times 800})

= (\frac{88}{10^4})

88 x 10-4 = 88 x 10-1 x 10-4

= 8.8 x 10-3

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