Which one will replace the question mark?

and (6 x 4) + 5 = 29

Therefore, (7 x 5) + 6 = 41

and (4 x 9) = 36 and (2 x 9) = 18

Therefore (9 x 6) = 54 and (4 x 6) = 24.

and (3)² + (9)² = 90

Therefore (1)² + (5)² = 26.

and (3)² + (4)² + (6)² + (2)² = 65 x 10 = 650

Similarly (0)² + (1)² + (2)² + (8)² = 69 x 10 = 690.

and 6 x 9 x 7 = 378

Therefore 5 x 7 x ? = 315

? = 9.

In first circle,

(3)² = 9

(4)² = 16

(5)² = 25

(6)² = 36.

In second circle,

(4)² = 16

(5)² = 25

(6)² = 36

(7)² = 49.

In third circle,

(6)² = 36

(7)² = 49

(8)² = 64

(9)² = 81.

Therefore, (2)² = 4.

(4 x 3) + 7 = 19

(5 x ?) + 6 = 31

? = 5.

and (7 x 5) + 3 = 38

Therefore (3 x 5) + 3 = 18.