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.

If 49 is subtracted from the square of a number, then the result obtained is 576. What is the number?

The point of intersection of all the angle bisector of a triangle is ______ of the triangle.

Find the curved surface area (in cm2) of a hemisphere of diameter 7 cm.

The length, breadth and height of a cuboid are 10 cm, 6 cm and 4 cm respectively. What is the total surface area?

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

ΔABC is a right angled triangle, the radius of its circumcircle is 3 cm and the length of its altitude drawn from the opposite vertex to the hypotenuse is 2 cm. Then the area of the triangle is

Find the odd word/letters/number from the given alternatives.