| Directions: What value will come in place of question mark (?) in the following questions? |
| \[\frac{3}{19}\]of 30% of \[3420={{?}^{2}}\times 2\] |
A) \[{{(81)}^{2}}\]
B) 7
C) 9
D) 81
E) 49
Correct Answer: C
Solution :
| \[\frac{3}{19}\times \frac{30}{100}\times 3420={{?}^{2}}\times 2\] |
| \[\Rightarrow \] \[{{?}^{2}}=\frac{3\times 3\times 18}{2}\] |
| \[\Rightarrow \] \[{{?}^{2}}=9\times 9\]\[\Rightarrow \]\[?=9\] |
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