The value of  $${cosec^2} 18° -{1\over cot^272°}$$.

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

4, 5, 14, 51, ?

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer

Give answer (A) If x > y
Give answer (B) if x ≥ y
Give answer (C) if x<y
Give answer (D) If x ≤ y
Give answer (E) if x=y or the relationship cannot be established.

I.  5x+2y=31
II. 3x+7y=36

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer

Give answer (A) If x > y
Give answer (B) if x ≥ y
Give answer (C) if x<y
Give answer (D) If x ≤ y
Give answer (E) if x=y or the relationship cannot be established.

I. x³-371=629
II.y³ – 543 =788

Direction : What should come in place of the question (?) in the following question.

$${34×4-12×8\over \ {6^2}+{\sqrt{196}}+(11)^2}=?$$

Direction : What should come in place of the question (?) in the following question.

$$3{5\over7}× 4{5\over6} + ? =23{3\over4}$$

Direction : What should come in place of the question (?) in the following question.

23.56 + 134.44+ 4142.25=?

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and Give answer

Give answer (A) If x > y
Give answer (B) if x ≥ y
Give answer (C) if x<y
Give answer (D) If x ≤ y
Give answer (E) if x=y or the relationship cannot be established.

I. x² – 1 =0
II. y²+4y+3=0