| Directions: What will come in place of question mark in the given questions? [IBPS (Clerk) Pre2015] |
| \[{{8}^{2}}\times {{7}^{2}}\div \sqrt{196}-143={{3}^{?}}\] |
A) 5
B) 6
C) 3
D) 4
E) 2
Correct Answer: D
Solution :
| \[{{8}^{2}}\times {{7}^{2}}\div \sqrt{196}-143={{3}^{?}}\] |
| \[\Rightarrow \]\[{{8}^{2}}\times {{7}^{2}}\div 14-143={{3}^{?}}\] |
| \[\Rightarrow \] \[64\times \frac{49}{14}-143={{3}^{?}}\] |
| \[\Rightarrow \] \[244-143={{3}^{?}}\] |
| \[\Rightarrow \] \[{{3}^{?}}=81\]\[\Rightarrow \]\[{{3}^{?}}={{3}^{4}}\] |
| \[\Rightarrow \] \[?=4\] |
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