Quantitative Aptitude - Arithmetic Ability Questions

Find the odd one out.

If the sum of a number and its reciprocal be 2, then the number is

ABCD is a cyclic trapezium in which AD || BC. If ∠ABC = 70°, then ∠BCD is

ΔPQR is right angled at Q. If cosP = 3/5, then what is the value of cosR ?

The point of the intersection of three medians is known as the ____________.

If the edge of a cube is increased by 2 cm, the volume will increase by 488 cub.cm. What then will be the length of each edge of the cube?

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.