| Direction: What will come in place of the question mark (?) in the following question? |
A) 4.5
B) 2.5
C) 1.5
D) 3.5
E) 4
Correct Answer: D
Solution :
\[?=\left( \sqrt{\frac{25}{9}}-\sqrt{\frac{64}{81}} \right)\div \sqrt{\frac{16}{324}}\] \[=\left( \frac{5}{3}-\frac{8}{9} \right)\div \frac{4}{18}\] \[=\left( \frac{15-8}{9} \right)\div \frac{2}{9}\] \[=\frac{7}{9}\times \frac{9}{2}=\frac{7}{2}=3.5\]
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