Q2:

Time, Speed & Distance

Hard

Two places A and B are 45 kms apart and connected by a straight road. Anil goes from A to B while Sunil goes from B to A. Starting at the same time, they cross each other in exactly 1 hour 30 minutes. If Anil reaches B exactly 1 hour 15 minutes after Sunil reaches A, the speed of Anil, in km per hour, is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 2

Q3:

Mean, Median & Mode

Medium

There are four numbers such that average of first two numbers is 1 more than the first number, average of first three numbers is 2 more than average of first two numbers, and average of first four numbers is 3 more than average of first three numbers. Then, the difference between the largest and the smallest numbers, is

15
Correct Answer
Explanation for CAT QA question 3

Q4:

Permutation & Combination

Medium

The sum of all four-digit numbers that can be formed with the distinct non-zero digits a,b,c,a, b, c, and dd, with each digit appearing exactly once in every number, is 153310+n153310 + n, where nn is a single digit natural number. Then, the value of (a+b+c+d+n)(a + b + c + d + n) is

31
Correct Answer
Explanation for CAT QA question 4

Q5:

Ratio, Proportion & Variation

Easy

In September, the incomes of Kamal, Amal and Vimal are in the ratio 8:6:58 : 6 : 5. They rent a house together, and Kamal pays 15%15\%, Amal pays 12%12\% and Vimal pays 18%18\% of their respective incomes to cover the total house rent in that month. In October, the house rent remains unchanged while their incomes increase by 10%10\%, 12%12\% and 15%15\%, respectively. In October, the percentage of their total income that will be paid as house rent, is nearest to

Answer options
Option 1
Correct Answer
Explanation for CAT QA question 5

Q6:

Simple & Compound Interest

Medium

An amount of Rs 10000 is deposited in bank A for a certain number of years at a simple interest of 5% per annum. On maturity, the total amount received is deposited in bank B for another 5 years at a simple interest of 6% per annum. If the interests received from bank A and bank B are in the ratio 10 : 13, then the investment period, in years, in bank A is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 6

Q7:

Polynomials

Medium

If the equations x2+mx+9=0x^2 + mx + 9 = 0, x2+nx+17=0x^2 + nx + 17 = 0, and x2+(m+n)x+35=0x^2 + (m + n)x + 35 = 0 have a common negative root, then the value of 2m+3n2m + 3n is

38
Correct Answer
Explanation for CAT QA question 7

Q8:

Logarithms

Medium

If xx is a positive real number such that 4log⁡10x+4log⁡100x+8log⁡1000x=134 \log _{10} x+4 \log _{100} x+8 \log _{1000} x=13, t hen greatest integer not exceeding x , is

31
Correct Answer
Explanation for CAT QA question 8

Q9:

Identities

Hard

Let x, y, and z be real numbers satisfying

4(x2+y2+z2)=a4(x^2 + y^2 + z^2) = a

4(x−y−z)=3+a4(x - y - z) = 3+ a

Then a equals

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 9

Q10:

Circles

Hard

In the XY-plane, the area, in sq. units, of the region defined by the inequalities y≥x+4y \geq x+4 and −4≤x2+y2+4(x−y)≤0-4 \leq x^{2}+y^{2}+4(x-y) \leq 0 is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 10

Q11:

Mixture & Alligation

Easy

A glass is filled with milk. Two-thirds of its content is poured out and replaced with water. If this process of pouring out two-thirds the content and replacing with water is repeated three more times, then the final ratio of milk to water in the glass, is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 11

Q12:

Functions

Medium

Consider two sets A={2,3,5,7,11,13}A = \{2, 3, 5, 7, 11, 13\} and B={1,8,27}B = \{1, 8, 27\}. Let ff be a function from AA to BB such that for every element bb in BB, there is at least one element aa in AA such that f(a)=bf(a) = b. Then, the total number of such functions ff is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 12

Q13:

Solids

Hard

The surface area of a closed rectangular box, which is inscribed in a sphere, is 846 sq cm, and the sum of the lengths of all its edges is 144 cm. The volume, in cubic cm, of the sphere is

Answer options
Option 1
Correct Answer
Explanation for CAT QA question 13

Q14:

Profit & Loss

Medium

The selling price of a product is fixed to ensure 40% profit. If the product had cost 40% less and had been sold for 5 rupees less, then the resulting profit would have been 50%. The original selling price, in rupees, of the product is

Answer options
Option 4
Correct Answer
Explanation for CAT QA question 14

Q15:

Linear Equation

Easy

A shop wants to sell a certain quantity (in kg) of grains. It sells half the quantity and an additional 3 kg of these grains to the first customer. Then, it sells half of the remaining quantity and an additional 3 kg of these grains to the second customer. Finally, when the shop sells half of the remaining quantity and an additional 3 kg of these grains to the third customer, there are no grains left. The initial quantity, in kg, of grains is

Answer options
Option 1
Correct Answer
Explanation for CAT QA question 15

Q16:

Identities

Hard

If (a+bn)(a+b \sqrt{n}) is the positive square root of (29−125)(29-12 \sqrt{5}), where aa and bb are integers, and nn is a natural number, then the maximum possible value of (a+b+n)(a+b+n) is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 16

Q17:

Triangles

Medium

ABCD is a rectangle with sides AB = 56 cm and BC = 45 cm, and E is the midpoint of side CD. Then, the length, in cm, of radius of in circle of △\triangleADE is

10
Correct Answer
Explanation for CAT QA question 17

Q18:

Ratio, Proportion & Variation

Medium

A fruit seller has a total of 187 fruits consisting of apples, mangoes and oranges. The number of apples and mangoes are in the ratio 5 : 2. After she sells 75 apples, 26 mangoes and half of the oranges, the ratio of number of unsold apples to number of unsold oranges becomes 3: 2. The total number of unsold fruits is

66
Correct Answer
Explanation for CAT QA question 18

Q19:

Indices

Medium

The sum of all real values of kk for which (18)k×(132768)13=(18)×(132768)1k\small \left( \dfrac{1}{8} \right)^k \times \left( \dfrac{1}{32768} \right)^{\frac{1}{3}} = \left( \dfrac{1}{8} \right) \times \left( \dfrac{1}{32768} \right)^{\frac{1}{k}} is

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 19

Q20:

Progression & Series

Medium

Suppose x1,x2,x3,…,x100x_{1}, x_{2}, x_{3}, \ldots, x_{100} are in arithmetic progression such that x5=−4x_{5}=-4 and 2x6+2x9=x11+x132 x_{6}+2 x_{9}=x_{11}+x_{13}, Then, x100x_{100} equals

Answer options
Option 2
Correct Answer
Explanation for CAT QA question 20

Q21:

Time & Work

Medium

Renu would take 15 days working 4 hours per day to complete a certain task whereas Seema would take 8 days working 5 hours per day to complete the same task. They decide to work together to complete this task. Seema agrees to work for double the number of hours per day as Renu, while Renu agrees to work for double the number of days as Seema. If Renu works 2 hours per day, then the number of days Seema will work, is

6
Correct Answer
Explanation for CAT QA question 21

Q22:

Miscellaneous

Medium

For any natural number nn, let ana_{n} be the largest integer not exceeding n\sqrt{n}. Then the value of a1+a2+….+a50a_{1}+a_{2}+\ldots .+a_{50} is

217
Correct Answer
Explanation for CAT QA question 22

CAT 2024 Quantitative Ability Past Year Question Paper

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