Quantitative Aptitude - Arithmetic Ability Questions

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?

In the following question, select the odd word pair from the given alternatives.

The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?

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?

Suppose that the medians BD, CE and AF of a triangle ABC meet at G. Then AG: GF is

If the circum radius of the equilateral triangle is 12 cm then what is the value of in radius (in cm) of the triangle?

Two circles with centres P and Q touch each other externally. A straight line drawn through the point of contact intersects the circle with centre P at A and the circle with centre Q at B. Then, which of the following is true?

The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?