Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (-3, 1) in the line x = -2?

 In ΔDEF measure of angle E is 90 deg. If tanD = 4/3, and DE = 6cm, then what is the length (in cm) of side EF?

If percentage of profit made,when an article is sold for Rs.78, is twice as when it is sold for Rs.69, the cost price of the article is

From the top of a platform 5 m high, the angle of elevation of a tower was 30 deg. If the tower was 45 m high, how far away from the tower was the platform positioned?

Solve the following 7 x {4 + (-2) x (-3)} = ?

The HCF of 20, 28 and 48 is

The HCF of 36,54 and 108 is

The lengths of two parallel sides of a trapezium are 21 cm and 9 cm. If its height is 10 cm, then what is the area (in cm2) of the trapezium?