What number should replace the question mark?

51 - - - 306

17 - - - 136

45 - - - 405

26 - - - 208

38 - - - ?

51.......306 5+1=6X51=306 17.......136 1+7=8x17=136 45.......405 4+5=9x45=405 26.......136 2+6=8x26=208 38........418 3+8=11x38=418.

ANS: The series follows the pattern mentioned below. The sum of the number multiplied by it gives the answer.

The answer is 418

143 - - - 22

26 - - - 4

104 - - - 16

65 - - - ?

A. 83 64 45 ?? B. 96 65 34 ??