What will be the next term in the following series?

OAC, QDG, SGK,?

Arrange in meaningful order: 1.Wall 2.House 3.Clay 4.Bricks 5.Room

C is larger than B. D is smaller than A, which is larger than C. E is larger than D but smaller than B. The largest among them is:

The word which cannot be formed from the letters used in 'POSTENTATION' is:

B is the daughter of A and cousin of C. D's father is E and D is the father of C. Also, the father of A is E. Who is B to D?

Five books are lying in a pile. Q is lying on M and O is lying under N. M is lying above N and P is lying under O. Which one is lying at the bottom?

C is larger than B. D is smaller than A, which is larger than C. E is larger than D but smaller than B. The largest among them is:

Arrange in meaningful order: 1.Wall 2.House 3.Clay 4.Bricks 5.Room

What will be the next term in the following series? OAC, QDG, SGK,?

Missing number in the following series? 5, 10, 19, __, 33, 38, 47

Fill the blanks sequence: a b _ b c _ c _ b a _ c