List of top Quantitative Aptitude Questions

Ram's income is 20% less than Shyam's. How much is Shyam's income more than Ram's in percentage terms?

The monthly salary of A, B and C is in the ratio 2:3:5. If C's monthly salary is Rs. 1200 more than that of A, find B's annual salary.

In a town there are 94,500 people. 2/9 of them are foreigners, 6,400 are immigrants and the rest are natives. How many are natives?

Total salary of three persons A, B and C is Rs. 144000. They spend 80%, 85% and 75% respectively. If their savings are in the ratio 8:9:20, find C's salary.

A person takes 3 hours to walk a certain distance and riding back. He could walk both ways in 5 hours. How long could it take to ride both ways.

12.5% of 80 is equal to

Which number should fill the blank space to complete the series: 1,2,4,5,7,8,10,11, ______

The average age of 29 boys of a class is equal to 14 years. When the age of the class teacher is included, the average becomes 15 years. Find the age of the class teacher.

The smallest of the fractions given below is:

Three friends shared the cost of a television. If Amit, Bharat and Dinesh each paid Rs. 3000 and Rs. 1800 respectively, then Dinesh paid what percent of the total cost?

Two vertical lamp-posts of equal height stand on either side of a road 50 m wide. At a point \(P\) on the road between them, the elevation of the tops of the lamp-posts are \(60^\circ\) and \(30^\circ\). Find the distance of \(P\) from the lamp-post which makes angle of \(60^\circ\).

A train crosses a platform 100 metres long in 60 seconds at a speed of 45 km/hr. The time taken by the train to cross an electric pole is:

A 20 litre vessel is filled with alcohol. Some of the alcohol is poured out into another vessel of equal capacity, which is then completely filled by adding water. The mixture thus obtained is then poured into the first vessel to capacity. Then \(6\frac{2}{3}\) litres is poured from the first vessel into the second. Both vessels now contain an equal amount of alcohol. How much alcohol was originally poured from the first vessel into the second?

It takes 6 technicians a total of 10 hours to build a new server from direct computer, with each working at the same rate. If six technicians start to build the server at 11:00 am, and one technician per hour is added beginning at 5:00 pm, at what time will the server be completed?

The ratio of the roots of \( bx^2 + nx + n = 0 \) is \( p:q \), then

The average age of a couple is 25 years. The average age of the family just after the birth of the first child was 18 years. The average age of the family just after the second child was born was 15 years. The average age of the family after the third and the fourth children (who are twins) were born was 12 years. If the present average age of the family of six persons is 16 years, how old is the oldest child?

If \( mx^n - nx^m = 0 \), then what is the value of \( \frac{1}{x^m + x^n} + \frac{1}{x^m - x^n} \) in terms of \( x \)?

What are the last two digits of \(7^{2008}\)?

The seed of any positive integer \(n\) is defined as: \[ \text{seed}(n) = n, \ \text{if } n<10 \] \[ \text{seed}(n) = \text{seed}(s(n)), \ \text{otherwise} \] where \(s(n)\) is the sum of digits of \(n\). How many positive integers \(n\), such that \(n<500\), will have \(\text{seed}(n) = 9\)?

A shop stores \(x\) kg of rice. The first customer buys half this amount plus half a kg of rice. The second customer buys half the remaining amount plus half a kg of rice. Then the third customer also buys half the remaining amount plus half a kg of rice. Thereafter, no rice is left in the shop. Which of the following best describes the value of \(x\)?

What is the value of \(a + b + c\) given the above conditions?

Which of the following cannot be true?