Direction: What should come in place of the question mark (?) in the question? |
A) \[\,{{9}^{2}}\]
B) \[\,-{{9}^{2}}\]
C) \[\sqrt{9}\]
D) 81
E) None of these
Correct Answer: E
Solution :
\[{{\left( \frac{450}{30} \right)}^{2}}-{{(12)}^{2}}={{(?)}^{2}}\] \[\Rightarrow 225-144={{?}^{2}}\] \[\Rightarrow {{?}^{2}}=81\] \[\therefore \,\,?=\sqrt{81}=9\]You need to login to perform this action.
You will be redirected in
3 sec