Quantitative Aptitude - Arithmetic Ability Questions

Find the range of the data : 11,13, 9, 17, 13, 19, 10, 11

Find the total surface area (in cm2 ) of a hemisphere of diameter 42 cm.

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

If 90% of A = 30% of B and B = x% of A, find x.

There is 40% increase in an amount in 5 years at simple interest. What will be the compound interest of Rs. 25000 after 3 years at the same rate?

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

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

A solid cone of height 36 cm and radius of base 9 cm is melted to form a solid cylinder of radius 9 cm and height 9 cm. What percent of material is wasted this process?