What is the square root of 83,521?  Options.
A) 476	B) 489	C) 289	D) 511	E) 311
1) Checking the last digits in the answer options A, C, E are out since last digit of the square is known to be 1.   2) C = 489^2 and E = 511^2   C = (300-11)^2 and E = (300 + 11)^2   Since we need the answer less than 90000 =&gt; E is out.   Thus we have 289 as the ans.
<result>C</result>
What is the square root of 83,521?