List of top Quantitative Aptitude Questions

A man divides his property so that his son's share to his wife's and the wife's share to his daughter are both in the ratio \(3:1\). If the daughter gets 10,000 less than the son, find the total worth of the property.
On selling a pen at 5% loss and a book at 15% gain Karim gains Rs.\ 7. If he sells the pen at 5% gain and the book at 10% gain then he gains Rs.\ 13. The actual price of the book (in Rs.) is:
An uneducated retailer marks all his goods at 50% above the cost price and thinking that he will still make 25% profit, offers a discount of 25% on the marked price. What is his actual profit on the sales?
A shopkeeper bought 150 calculators at the rate of Rs. 250 per calculator. He spent Rs. 2500 on transportation and packing. If the marked price of a calculator is Rs. 320 per calculator and the shopkeeper gives a discount of 5% on the marked price, then what will be the percentage profit gained by the shopkeeper?
In a factory producing parts of an automobile, the parts manufactured on the shop floor are required to go through three quality checks, each conducted after a specific part of the processing on the raw material is completed. Only parts that are not rejected at one stage are put through the subsequent stages of production and testing. If average rejection rates at these three testing machines during a month are 10%, 5% and 2% respectively, then what is the effective rejection rate for the whole plant?
In measuring the side of a square, an error of 5% in excess is made. The error % in the calculated area is,
If \(x+1\) is a factor of \(2x^3 + ax^2 + 2bx + 1\), then find the values of \(a\) and \(b\) given that \(2a - 3b = 4\).
Which of the following is a factor of \(x^3 - 19x + 30\)?
If the length of a certain rectangle is decreased by 4 cm and the width is increased by 3 cm, a square with the same area as the original rectangle would result. Find the perimeter of the original rectangle.
An employer engaged a servant with free boarding and lodging for one year with the condition that the servant will be given Rs. 15000 and a cycle at the end of the year. The servant agreed but served the employer only for 9 months and thus received Rs. 11000 and a cycle. The price of the cycle is:
Raju got married 8 years ago. His present age is \( \frac{6}{5} \) times his age at the time of his marriage. Raju's sister was 10 years younger than him at the time of his marriage. The present age of Raju's sister is?
Two numbers are in the ratio \(4:5\). Their LCM is 240. Find the sum of numbers.
Find the HCF of 405, 585, 765 and 900.
How many distinct prime factors are there in 9900?
Find the sum of first 90 even natural numbers.
Which of the following is a prime number?
If 40 boys can do a piece of work in 18 days working 6 hours per day, how many more boys are required to do the same work in 12 days working 4 hours per day?
Simplify: \((27)^{\frac{-1}{3}} \times (27)^{\frac{-1}{3}} \times [27^{\frac{1}{3}} - 27^{\frac{2}{3}}]\)
The LCM of two numbers is 15 times their HCF. If the sum of their LCM and HCF is 160 and one of the numbers is 50, then what is the other number?
A certain sum on compound interest becomes ₹19573 at 15% per annum in 2 years. Find the compound interest on the same sum at 10% per annum in 2 years.
If a 'girl' is called a 'boy', 'boy' is called a 'man', 'man' is called a 'waiter', 'waiter' is called a 'woman', 'woman' is called a 'teacher' and 'teacher' is called a 'girl', then who will serve food in a restaurant?
On simple interest a certain sum amounts to ₹14061 in 6 years and to ₹16023 in 8 years on the same rate of interest. The rate of interest per annum is:
If the adjacent sides of a rectangle are increased by 35% and 20%, respectively, then by what percent will its area increase?
In an election between two candidates, 12% voters did not cast their vote. \(\frac{1}{6}\)th of the votes casted were found to be invalid. The winner obtained 55% of the valid votes and won the election by 36542 votes. Find the total number of voters registered.
Find the LCM of the numbers: \(\frac{4}{9}, \frac{8}{15}, \frac{6}{9}, \frac{12}{21}, \frac{14}{33}\)