Quantitative Aptitude - Arithmetic Ability Questions

The side of an equilateral triangle is 14 cm. Find its area (in sq.cm).

If a - b = 10 and ab =-21, then what is the value of a3-b3 ?

5 bottles cost as much as 2 bags. The cost of 15 bottles and 4 bags is Rs 2,000. What is the price (in Rs.) of a single bag?

If 6/7th of 8/5th of a number is 192, then 3/4th of that number is _____.

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.

The standard deviation of the set {10, 10, 10, 10, 10} is

The ratio of selling price to the cost price is 13 : 17. What is the loss percentage?

Average age of A and B, 2 years ago was 26. If the age of A, 5 years hence is 40 years, and B is 5 years younger to C, then find the difference between the age of A and C?