Quantitative Aptitude - Arithmetic Ability Questions

The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher's age in years is

The mode of the data 12, 1, 10, 1, 9, 3, 4, 9, 7, 9 is

Area of 4 walls of a cuboid 400 sq cm, its length is 15 cm and height is 8 cm. What is its breadth (in cm)?

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

The standard deviation of the set {10, 11, 12, 9, 8} is

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

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.

What is the value of (3/5 + 7/9)?