Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

What is the value of 12 + 3(-2 x 3) - (18 / 6) ?

Kaushik bought a toy for Rs. 160 and sold it for Rs. 180. The rate of profit was ___%.

What is the sum of the measures of all the interior angles of a regular polygon of 5 sides?

Points P and Q lie on side AB and AC of triangle ABC respectively such that segment PQ is parallel to side BC. If the ratio of AP:PB is 1:4 and area of Δ APQ is 4 sq cm, what is the area of trapezium PQCB?

An angle is greater than its complementary angle by 40°. Find the measure of the angle?

If 70% of 5/7th of a number is 90, find the number.

Length of three line segments isgiven. Is construction of a triangle possible with the segments in the given cases?