| Directions: What will come in place of question mark in the given questions? [IBPS (Clerk) Pre2015] |
| \[\sqrt{1849}+\sqrt{441}={{2}^{16-?}}\] |
A) 14
B) 12
C) 6
D) 10
E) 8
Correct Answer: D
Solution :
| \[\sqrt{1849}+\sqrt{441}={{2}^{16-?}}\] |
| \[\Rightarrow \]\[43+21={{2}^{16-?}}\] |
| \[\Rightarrow \] \[64={{2}^{16-?}}\] |
| \[\Rightarrow \] \[{{2}^{16\,\,-\,\,?}}={{2}^{6}}\] |
| \[\Rightarrow \] \[16-?=6\] |
| \[\Rightarrow \] \[?=16-6\] |
| \[\Rightarrow \] \[?=10\] |
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