| Directions: What should come at the place of question mark (?) in the following questions? [IBPS (PO/MT) 2015] |
| \[421\div 35\times 299.97\div 25.05={{?}^{2}}\] |
A) 22
B) 24
C) 28
D) 12
E) 18
Correct Answer: D
Solution :
| \[421\div 35\times 299.97\div 25.05={{(?)}^{2}}\] |
| \[\approx 420\div 35\times 300\div 25={{(?)}^{2}}\] |
| \[\approx 420\times \frac{1}{35}\times 300\times \frac{1}{25}=\frac{420}{35}\times \frac{300}{25}\] |
| \[=12\times 12={{(?)}^{2}}\]\[\Rightarrow \]\[{{(12)}^{2}}={{(?)}^{2}}\] |
| \[?=12\] |
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