RBI Grade b

Question 1

Below are given two series which
follow certain pattern.
There are two missing values X
and Y.
Series I: 158, 78, 38, 18, 8, X
Series II: 9, Y, 46, 84, 135, 199
Which of the following statements is/are true?
1) X = 7Y
2) 3 < X < Y < 21
3) 4(Y + 3.5) = 11(X)2– 1

Answer 1

3) 4(Y + 3.5) = 11(X)2– 1

Question 2

Consider the below two quadratic
equations:
I. 4x2– 16x + C = 0
II. 2y2 – 3y + 1 = 0
One of the roots of equation I is 1.5
Q1. Find the sum of the largest roots
of equation I and II.
Q2. Find the sum of the digits of C.
Q3.

Answer 2

1. 3.5
2. 6