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1 . What should come in place of the question mark (?) in the following questions ?
$\sqrt {12321}$ = ?
[ A ]    111 right
[ B ]    121
[ C ]    81
[ D ]    91
[ E ]    None of these
Answer : Option A
Explanation :
? = $\sqrt {12321}$ = $\sqrt {111 \times 111}$ = 111

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