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.

Sin6A + Cos6A - 1 is equal to

If 12x2 - ax + 7 = ax2 + 9x + 3 has only one (repeated) solution, then the positive integral solution of a is

The mean of the data 3, 10, 10, 4, 7, 10, 5 is

An object travels 24 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

If the sum of radius and height of a solid cylinder is 20 cm and its total surface area is 880 cm then its volume is

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

The diagonals of 2 squares M and N are in the ratio 2:1. The ratio of their areas is