Question
Select an appropriate figure from the given four options
that would replace the question mark ‘?’ in the following figure series.Solution
The logic followed here is as follows: Elements are moving 90° in clockwise direction in each step. 
I). p2 = 81
II). q2 - 9q + 14 = 0
I. 7x² + 27x + 18 = 0
II. 19y² - 27y + 8 = 0
l. p2Â - 3p - 54 = 0
II. q2Â - 19q + 90 = 0
I. x2 - 20x + 96 = 0
II. y2 - 23y + 22 = 0
I. 2x² - 11x + 12 = 0
II. 12y² + 29y + 15 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: x² - 24x + 143 = 0
Equation 2: y² - 20y + 96 = 0
I.√(3x-17)+ x=15
II. Â y+ Â 135/y=24Â
I. 2y2 - 15y + 18 = 0
II. 2x2 + 9x - 18 = 0
A and B are the roots of equation x2 - 13x + k = 0. If A - B = 5, what is the value of k?
I. 6p2 – 7p = 5p – 7p2 + 25
II. 11q2 – 63q + 90 = 0