Quantitative Aptitude - Arithmetic Ability Questions

For the figure given below, find the value (in degrees) of 2∠A + ∠B.

At least two pairs of consecutive angles are congruent in a _____.

What is the curved surface area (in cm²) of a hemisphere of diameter 42 cm?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by aLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

If an interior of a regular polygon is 170o, then the number of sides of the polygon is

Which of the following is in ascending order?

Two pipes P and Q can fill an empty tank in 25 hours and 20 hours respectively. Pipe R alone can empty the completely filled tank in 50 hours. Firstly both the pipes P and Q are opened and after 8 hours pipe R is also opened. What will be the total time (in hours) taken to completely fill the tank?