9, 35, 91, 189, 341, ?	Options.
A) 502  B) 521  C) 559  D) 611  E) 712
Explanation :   13 + 23 = 9   23 + 33 = 35   33 + 43 = 91   43 + 53 = 189   53 + 63 = 341   63 + 73 = 559   Answer : Option 559
<result>C</result>
9, 35, 91, 189, 341, ?