Quantitative Aptitude - Arithmetic Ability Questions

The effective annual rate of interest corresponding to a nominal rate of 19% per annum payable half­yearly is:

Select the odd word/letters/number/number pair from the given alternatives.

The order of rotational symmetry of a rectangle is

Select the odd word/letters/number/number pair from the given alternatives.

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.

In ΔPQR, ∠QPR = 45° and the bisectors of ∠PQR and ∠PRQ meets at O. What is the value (in degrees) of ∠QOR?

In figure, DE || BC. If DE = 3 cm, BC = 6 cm and area of ΔADE = 15 sq cm, then the area of ΔABC is

G and AD are respectively the centroid and median of the triangle ΔABC.The ratio AG:AD is