Quantitative Aptitude - Arithmetic Ability Questions

The sum of the ages of Rohit and Ankit is 78. Rohit's age is twice the age of Ankit. What is the age (in years) of Rohit?

An exterior angle of a triangle is 115 deg and one of the interior opposite angle is 45 deg. Then the other two angles are

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?

The lengths of diagonals of a rhombus are 24cm and 10cm the perimeter of the rhombus (in cm ) is :

In the following question, select the odd letter 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 of 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

If a + b = 1, then a4 + b4 - a3 - b3 - 2a2b2 + ab is equal to