List of top Quantitative Aptitude Questions asked in CAT

Aboy is asked to put one mango in a basket when ordered ’One’, one orange when ordered ’Two’, one apple when ordered ’Three’, and is asked to take out from the basket one mango and an orange when ordered ’Four’. A sequence of orders is given as:
1 2332142314223314113234

Each of the 11 letters A, H, I, M, O, T, U, V, W, X and Z appears same when looked at in a mirror. They are called symmetric letters. Other letters in the alphabet are asymmetric letters.

In the diagram,\[ \angle ABC = 90^\circ = \angle DCH = \angle DOE = \angle EHK = \angle FKL = \angle GLM = \angle LMN \]\[ AB = BC = 2CH = 2CD = EH = FK = 2HK = 4KL = 2LM = MN \]

In how many ways is it possible to choose a white square and a black square on a chessboard so that the squares must not lie in the same row or column?
If \( pqr = 1 \), the value of the expression \[ \frac{1}{1 + p + q} + \frac{1}{1 + q + r} + \frac{1}{1 + r + p} \] is equal to:
It takes six 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 am, and one technician per hour is added beginning at 5 pm, at what time will the server be completed?
Three small pumps and a large pump are filling a tank. Each of the three small pumps works at \( \frac{2}{3} \) the rate of the large pump. If all four pumps work at the same time, they should fill the tank in what fraction of the time that it would have taken the large pump alone?
\( 7^{6n} - 6^{6n} \), where \( n \) is an integer \(>0 \), is divisible by:
Three travellers are sitting around a fire, and are about to eat a meal. One of them has 5 small loaves of bread, the second has 3 small loaves of bread. The third has no food, but has 8 coins. He offers to pay for some bread. They agree to share the 8 loaves equally among the three travellers, and the third traveller will pay 8 coins for his share of the 8 loaves. All loaves were the same size. The second traveller (who had 3 loaves) suggests that he will be paid 3 coins, and that the first traveller be paid 5 coins. The first traveller says that he should get more than 5 coins. How much should the first traveller get?
A piece of string is 40 cm long. It is cut into three pieces. The longest piece is three times as long as the middle-sized and the shortest piece is 23 cm shorter than the longest piece. Find the length of the shortest piece.

In the above figure, ACB is a right-angled triangle. CD is the altitude. Circles are inscribed within the triangles \( \triangle ACD \) and \( \triangle ABC \). P and Q are the centres of the circles. The distance PQ is

If \( u, v, w \) and \( m \) are natural numbers such that \( u^m + v^m = w^m \), then which one of the following is true?
A train approaches a tunnel AB. Inside the tunnel is a cat located at a point that is \( \frac{3}{8} \) of the distance AB measured from the entrance A. When the train whistles the cat runs. If the cat moves to the entrance of the tunnel A, the train catches the cat exactly at the entrance. If the cat moves to the exit B, the train catches the cat at exactly the exit. The speed of the train is greater than the speed of the cat by what order?
After the division of a number successively by 3, 4 and 7, the remainders obtained are 2, 1 and 4 respectively. What will be the remainder if 84 divides the same number?
Six persons are playing a card game. Suresh is facing Raghubir who is to the left of and to the right of Pramod. Ajay is to the left of Dhiraj. Yogendra is to the left of Pramod. If Dhiraj exchanges his seat with Yogendra and Pramod exchanges with Raghubir, who will be sitting to the left of Dhiraj?
Three pieces of cakes of weights \( 4 \frac{1}{2} \) lb, \( 6 \frac{3}{4} \) lb and \( 7 \frac{1}{5} \) lb respectively are to be divided into parts of equal weight. Further, each part must be as heavy as possible. If one such part is served to each guest, then what is the maximum number of guests that could be entertained?
Ten straight lines, no two of which are parallel and no three of which pass through any common point, are drawn on a plane. The total number of regions (including finite and infinite regions) into which the plane will be divided by the lines is:
Suppose for any real number \( x \), \( [x] \) denotes the greatest integer less than or equal to \( x \). Let \( L(x, y) = [x] + [y] \) and \( R(x, y) = [2x] + [2y] \). Then is it impossible to find any two positive real numbers \( x \) and \( y \) for which:
The number of real roots of the equation \( \frac{A^2}{x} + \frac{B^2}{x-1} = 1 \), where \( A \) and \( B \) are real numbers not equal to zero simultaneously, is:
A child was asked to add first few natural numbers (i.e. \( 1 + 2 + 3 + \dots \)) so long his patience permitted. As he stopped, he gave the sum as 575. When the teacher declared the result wrong, the child discovered he had missed one number in the sequence during addition. The number he missed was:
A car rental agency has the following terms. If a car is rented for 5 hr or less, the charge is Rs. 60 per hour or Rs. 12 per kilometre whichever is more. On the other hand, if the car is rented for more than 5 hr, the charge is Rs. 50 per hour or Rs. 7.50 per kilometre whichever is more. Akil rented a car from this agency, drove it for 30 km and ended up paying Rs. 300. For how many hours did he rent the car?
When \( 2^{56} \) is divided by 17, the remainder would be:
Amol was asked to calculate the arithmetic mean of 10 positive integers, each of which had 2 digits. By mistake, he interchanged two digits, say \( a \) and \( b \), in one of these 10 integers. As a result, his answer for the arithmetic mean was 1.8 more than what it should have been. Then \( b - a \) equals:
Shyam visited Ram during his brief vacation. In the mornings they both would go for yoga. In the evenings they would play tennis. To have more fun, they indulge only in one activity per day, i.e. either they went for yoga or played tennis each day. There were days when they were lazy and stayed home all day long. There were 24 mornings when they did nothing, 14 evenings when they stayed at home, and a total of 22 days when they did yoga or played tennis. For how many days Shyam stayed with Ram?
Mayank, Mirza, Little and Jaspal bought a motorbike for rupee 60. Mayank paid one-half of the sum of the amounts paid by the other boys. Mirza paid one-third of the sum of the amounts paid by the other boys. Little paid one-fourth of the sum of the amounts paid by the other boys. How much did Jaspal have to pay?