\((1.28 \times 10^{4}) \div (6.4 \times 10^{2})\) equals
A
2 x 10-5
B
2 x 10-1
C
2 x 101
D
2 x 10-4
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
\((1.28 \times 10^{4}) \div (6.4 \times 10^{2})\)
= \(\frac{1.28 \times 10^{4}}{6.4 \times 10^{2}}\)
\(\equiv \frac{12.8 \times 10^{3}}{6.4 \times 10^{2}}\)
= \(2 \times 10^{1}\)
Source: Myschool Past Questions Archive (Record #32645)