Quantitative Aptitude - Arithmetic Ability Questions

What is the value of Sin 30- √2 Cos 30

46% of 250 is equal to

What is the reflection of the point (6, -3) in the line y = 2?

PQRA is a rectangle, AP = 22 cm, PQ = 8 cm. ΔABC is a triangle whose vertices lie on the sides of PQRA such that BQ = 2 cm and QC = 16 cm .Then the length of the line joining the mid points of the sides AB and BC is

If a -­ b = 6 and ab =16, then a3 -­ b3 is

If 3√2 + √18 + √50 = 15.55, then what is the value of √32 + √72?

A, B and C can do a job working alone in 6, 9 and 18 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to complete the remainder of the job?

Two circles are having radii 9 cm and 12 cm. The distance between their centres is 15 cm. What is the length (in cm) of their common chord?