| \[\frac{8.4\times 4.2\div 2.1}{2.1\times 4.2\div 8.4}\]is equal to |
A) 16
B) 8
C) 1.6
D) 1
E) None of these
Correct Answer: A
Solution :
| \[\frac{8.4\times 4.2\times \frac{1}{2.1}}{2.1\times 4.2\times \frac{1}{8.4}}=\frac{8.4\times 2}{2.1\times \frac{1}{2}}=\frac{4\times 2}{1/2}=\frac{8}{1/2}=8\times 2=16\] |
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