Quantitative Aptitude - Arithmetic Ability Questions

If in-radius of an equilateral triangle is 3 cm. Calculate the perimeter (in m) of the equilateral triangle.

Each exterior angle of a regular polygon measures 9 deg. How many sides does the polygon have?

Find out the odd word/letters/number/number pair from the given alternatives.

If the measure of the interior angle of a regular polygon is 120 deg then how many sides does it have?

Product of digits of a 2-digit number is 24. If we add 45 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?

If sin ­-240° = x, then the value of x is

If A + B = 90 deg and Cos B = 1/3, then the value of Sin A is

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?