|A) 15||B) 17|
|C) 10||D) 6|
Sum of numbers in the outer circle in before Arc should come in inner circle patterns in the clock wise direction next Arc.
i.e, 9+6 = 15 comes in next arc of inner circle
7+3 = 10 comes in next arc of inner circle
In the same way, 4+2 = 6 comes in place of '?'.