IBPS PO Prelims 3 oct 2020 Questions and Answers Detailed Explanation

Answer: (b)

After solving both equations, we get its values as,

X= 8,

y = 12

∴ The required answer is X < Y

Answer: (e)

By solving the two equations,

Equation 1 ⇒  X² -5X + 6 = 0

⇒ X²- 3X -2X + 6 = 0

⇒ X(X - 3) - 2(X - 3) = 0

⇒ (X -3)(X -2) = 0

⇒ X = +3, +2

Equation 2 ⇒  2y² – 7y +3 = 0

⇒ 2Y²− 6Y − Y + 3 = 0

⇒ 2Y(Y − 3) −1(Y − 3) = 0

⇒ (2Y − 1)(Y − 3) = 0

⇒ Y = 3, 0.5

Hence, No relation can be established

Answer: (e)

I. X² = 9² 

⇒ X = +9, –9

II. (Y – 8)² = 9

⇒ (Y – 8)² = 3²

⇒ Y = 8 + 3 or 8 – 3

⇒ Y = 11 or 5

So, no relation can be established between X and Y

Answer: (d)

The pattern of the series is alike,

×1, ×3, ×5, ×7, ×9

Answer: (c)

The pattern of the series is alike,

+1.2, +1.5, +1.8, +2.1, +2.4

Answer: (a)

The pattern of the series is alike,

-(5² + 1), -(4² + 1), -(3² + 1), -(2² + 1), -(1² + 1)