Quantitative Aptitude - Arithmetic Ability Questions

An equal sum is invested in two different schemes. One scheme gives simple interest and the other gives compound interest (annual compounding). The sum of interest obtained after 2 years from both the schemes is Rs 2961. If both schemes have 23% per annum interest rate, then what is the first year interest (in Rs)of simple interest scheme?

PQR is an equilateral triangle whose side is 10 cm. What is the value (in cm) of the inradius of triangle PQR?

What is the value of the expression a3 - 5 + 2816a, when a = 2?

A shopkeeper by selling 21 Nike shoes, earns a profit equal to the selling price of 5 Nike shoes. His profit percentage is

If 2x + 3y = 0 and 3x ­- 4y = 34, then x ­- y = ______

If cos3A = X, then value of X?

Find two numbers whose sum is 29 and the product is 100.

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.