List of top Quantitative Aptitude Questions

When \(2\frac{1}{2}\) is added to a number and the sum is multiplied by \(4\frac{1}{2}\) and then 3 is added to the product and then the sum is divided by \(1\frac{1}{5}\), the quotient becomes 25. What is that number?

The simplified value of \[ [(0.111)^3 + (0.222)^3 - (0.333)^3 + (0.333)^2 \times (0.222)^3] \] is:

A die is rolled twice. What is the probability that the sum of the numbers on the two faces is 5?

What is the value of \( x \) in the following equation? \[ \frac{x^{0.4}}{16} = \frac{32}{x^{2.6}} \]

A man has 9 friends: 4 boys and 5 girls. In how many ways can he invite them, if there have to be exactly 3 girls in the invitees?

If \( 2x + 3y = 12 \) and \( x - y = 1 \), what is the value of \( x \)?

A pipe can fill a tank in 6 hours, and another pipe can empty it in 8 hours. If both are opened together, how many hours will it take to fill the tank? (Enter the answer as a fraction or decimal.)

What is the sum of the first 20 terms of the arithmetic sequence 3, 7, 11, …?

A and B start a business with investments of Rs. 4000 and Rs. 6000. If the profit after 1 year is Rs. 5000, what is A’s share?

If \( x^2 - 5x + 6 = 0 \), what is the sum of the roots?

If \( \log_2 x + \log_2 (x - 2) = 3 \), what is \( x \)?

The ratio of two numbers is 3:4. If their sum is 70, what is the larger number?

The area of a circle is 154 cm². What is its radius? (Use \( \pi = \frac{22}{7} \))

A man can row at 6 km/h in still water. If the river flows at 2 km/h and it takes him 1 hour to row to a place and return, what is the distance to the place?

A train travels 360 km in 4 hours. What is its speed in km/h?

In a class, 60% of students are boys, and 40% are girls. If 30% of boys and 20% of girls passed an exam, what percentage of the class passed?

A and B can complete a task in 12 days, B and C in 15 days, A and C in 20 days. How many days will A alone take?

The sum of the ages of a father and son is 50 years. Five years ago, the father’s age was four times the son’s age. What is the father’s current age?

A car travels from A to B at 60 km/h and returns at 40 km/h. What is the average speed for the round trip?

A rectangle has an area of 60 cm² and a perimeter of 32 cm. What is the length if it is greater than the width?

A sum of Rs. 10,000 is invested at 5% per annum compound interest for 2 years. What is the total amount?

A shopkeeper sells an item at a 20% profit. If the cost price is increased by 10% and the selling price by Rs. 10, the profit percentage becomes 15%. What is the original cost price?

If \(3x + 4y = 12\) and \(x - y = 1\), what is the value of \(x + y\)?