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 on 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

4 + 16 x -12 x 24 - 13 - 3 ÷ 20 - 4 = ?

The ratio of present ages of Rangitha and Shaheen is 6:5. After 12 years the ratio of their ages will be 7:6. What is Rangitha's present age?

A spaceship travels at 1,260 km/h. How many metres does it travel in 1/10 th of a second?

A and B undertake a piece of work for Rs. 250 . A alone can do that work in 5 days and B alone can do that work in 15 days . With the help of C, they finish the work in 3 days . If every one gets paid in proportion to work done by them, the amount C will get is 

The maximum number of common tangents that can be drawn to two disjoint circles is

Fraction that lies between 2/5 and 4/9 is

In the given figure, PQ is the diameter of the circle. What is the measure (in degrees) of QSR?