JAMB - Mathematics (1979 - No. 2)
\((1.28 \times 10^{4}) \div (6.4 \times 10^{2})\) equals
2 x 10-5
2 x 10-1
2 x 101
2 x 10-4
Paliwanag
\((1.28 \times 10^{4}) \div (6.4 \times 10^{2})\)
= \(\frac{1.28 \times 10^{4}}{6.4 \times 10^{2}}\)
\(\equiv \frac{12.8 \times 10^{3}}{6.4 \times 10^{2}}\)
= \(2 \times 10^{1}\)