Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?

In what ratio does the point T(x,0) divide the segment joining the points S(-4,-1) and U(1,4)?

An angle in a semicircle is

The angle of elevation of the top of a pillar from the foot and the top of a building 20 m high, are 60° and 30° respectively. The height of the pillar is

The heights of a cone and a cylinder are equal. The radii of their bases are in the ratio 2:1. The ratio of their volumes is:

4 years ago, the ratio of Vikah's to Rahul's age was 3:5. After 6 years, this ratio would become 4:5. Find present age of Rahul.

The square root of 5776 is