WBCS Mains 2021 (Held On May 2022) Official Paper-VI

A survey shows that $73\%$ of Indians like apples, whereas $65\%$ like oranges. What percentage of Indians like both apples and oranges?

If the length of the shadow on the ground of a post is $\frac{1}{\sqrt{3}}$ times its height, the angle of elevation of the Sun is:

ulna : forearm :: tibia : ?

A man borrows $\text{Rs. }2,550$ to be paid back with compound interest at the rate of $4\%$ per annum by the end of 2 years in two equal yearly instalments. How much will each instalment be?

Direction: Study the following information carefully and answer the question given below.
An algorithm rearranges a sequence of numbers following a specific rule in each step. Following is an illustration of input and the subsequent steps of rearrangement.
Input: 98 31 06 72 63 59 36 12 84
Step 1: 98 31 36 72 63 59 06 12 84
Step 2: 84 31 36 72 63 59 06 12 98
Step 3: 84 31 36 63 72 59 06 12 98
Step 4: 84 31 12 63 72 59 06 36 98

Given Input: 31 59 06 72 84 12 36 98 63
Which step will be "63 59 36 84 72 12 06 98 31"?