Direction (66-70): What should come in place of the question mark(?) in the following number series?

4, 5, 14, 51, ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

7, 8 , 17, 42, ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

8, 39, 155, 464, ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

729, 243, 81, 27, ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

5, 6, 15, 50,?

A tower standing on a horizontal plane subtends a certain angle at a point 160 m apart from the foot of the tower. On advancing 100 m towards it, the tower is found to subtend and angle twice as before. The height of the tower is

In the following questions two equations numbered I and II are given. You have to solve both the equations and ____
I.$$\sqrt { 361} x+\sqrt { 16}=0 \ $$
II.$$\sqrt { 441} y+\ { 4}=0 \ $$
Give answer
(A) x> y
(B) x ≥ y
(C) x< y
(D) x ≤ y
(E) x=y or the relationship cannot be established

In the following questions two equations numbered I and II are given. You have to solve both the equations and ____
(A) x>y
(B) x≥y
(C) x<y
(D) x≤y
(E) x=y or the relationship cannot be established
I.\(20x^2 - x - 12 = 0\)
II.\(20y^2 + 27y + 9 = 0\)