6, 11, 21, 36, 56, 81, 111, 146, ?	Choose the correct choice from the following answers
A) 51
B) 71
C) 186
D) 61
E) 91
The pattern is + 5, + 10, + 15, + 20, + 25, + 30, + 35, + 40, + 45, + 50,....   Answer : 186.
<result>C</result>
6, 11, 21, 36, 56, 81, 111, 146, ?