Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letter/letters 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.

Find the odd pair out.

The product of two numbers is 0.324. One of the numbers is 1.2. What is the other number?

Slope of the line AB is 4/3. Co-ordinates of points A and B are (x , -5) and (2 , -3) respectively. What is the value of x?

In a rhombus _____.

If the radius (r) of a circle is increased by 'x' units, what is the number of units by which the circumstance of the circle is increased?

The sum of a non-zero number and thrice its reciprocal is 52/7. Find the number.