IBPS PO Mains 2018 Paper for online practice

Let number of yellow, pink and white balls be x, y and z respectively
ATQ,
x – y = y – z
y =

x+z

2

or 2y = x + z
And

z

x+y+z

> 0.2

z

3y

>

1

5

5z > 3y
If y = 5, then z > 3
If y = 10, then z > 6, but this isn’t possible
Hence,

5, 5, 5 isn’t possible as number of balls is different Hence, from given numbers only (B), (D) and (E)can be the possible.
So, option, (b) is the correct answer.