Which one will replace the question mark?

1 + 2 + 3 + 4 = 10

and 1 + 3 + 5 + 8 = 17

Similarly, 1 + 4 + 6 + 9 = 20.

(5 + 3)/2 = 4

and (6 + 8)/2 = 7

Therefore (8 + 4)/2 = 6.

(4 + 9 + 2) = (3 + 5 + 7) = (8 + 1 + 6)

Total in each case = 15.

(0 + 2 + 6 + 4) - 2 = 10

and (6 + 2 + 10 + 8) - 2 = 24

Therefore, (4 + 14 + 12 + 10) - 2 = 38.

93 - (27 + 3) = 63

79 - (38 + 4) = 37

Therefore, 67 - (16 + X) = 42

X = 9

All except Chicken can live in water.

All except Veil cover the head, while veil covers the face.

All except Eagle are flightless birds.

All except Ayurveda are names of holy scriptures, the four Vedas. Ayurveda is a branch of medicine.

All except Oil are products obtained from milk.