CAT 2024 Question Paper Slot -3 | QA
CAT Quantitative Aptitude (QA) | CAT Previous Year Paper
Unlike previous years, the CAT 2024 Quant section was not dominated by Arithmetic, though it remained the most tested topic, followed by Algebra. Within Arithmetic, questions were primarily focused on Speed-Time-Distance, Mixture, and Alligations. The section included eight TITA (Type-in-the-answer) questions. Overall, the CAT 2024 Quantitative Aptitude Section was difficult paper compared to the previous years.
CAT 2024 Slot 3 - Quantitative Aptitude
CAT 2024 Slot 3 – QA
1. A circular plot of land is divided into two regions by a chord of length 10√3 meters such that the chord subtends an angle of 120° at the center. Then, the area, in square meters, of the smaller region is
A. 20(4π/3 + √3)
B. 25(4π/3 – √3)
C. 25(4π/3 + √3)
D. 20(4π/3 – √3)
CAT 2024 Slot 3 – QA
2. A certain amount of water was poured into a 300 litre container and the remaining portion of the container was filled with milk. Then an amount of this solution was taken out from the container which was twice the volume of water that was earlier poured into it, and water was poured to refill the container again. If the resulting solution contains 72% milk, then the amount of water, in litres, that was initially poured into the container was
CAT 2024 Slot 3 – QA
3. A regular octagon ABCDEFGH has sides of length 6 cm each. Then the area, in sq. cm, of the square ACEG is
A. 36(1 + √2)
B. 72(2 + √2)
C. 36(2 + √2)
D. 72(1 + √2)
CAT 2024 Slot 3 – QA
4. In a group of 250 students, the percentage of girls was at least 44% and at most 60%. The rest of the students were boys. Each student opted for either swimming or running or both. If 50% of the boys and 80% of the girls opted for swimming while 70% of the boys and 60% of the girls opted for running, then the minimum and maximum possible number of students who opted for both swimming and running, are
A. 75 & 96 respectively
B. 75 & 90 respectively
C. 72 & 88 respectively
D. 72 & 80 respectively
CAT 2024 Slot 3 – QA
5. Gopi marks a price on a product in order to make 20% profit. Ravi gets 10% discount on this marked price, and thus saves Rs 15. Then, the profit, in rupees, made by Gopi by selling the product to Ravi, is A. 20 B. 10 C. 15 D. 25CAT 2024 Slot 3 – QA
6. The average of three distinct real numbers is 28. If the smallest number is increased by 7 and the largest number is reduced by 10, the order of the numbers remains unchanged, and the new arithmetic mean becomes 2 more than the middle number, while the difference between the largest and the smallest numbers becomes 64. Then, the largest number in the original set of three numbers is
CAT 2024 Slot 3 – QA
7. If (𝑎 + 𝑏√3)2 = 52 + 30√3, Where a and b are natural numbers, then a + b equals
A. 10
B. 9
C. 7
D. 8
CAT 2024 Slot 3 – QA
8. After two successive increments, Gopal’s salary became 187.5% of his initial salary. If the percentage of salary increase in the second increment was twice of that in the first increment, then the percentage of salary increase in the first increment was
A. 27.5
B. 20
C. 30
D. 25
CAT 2024 Slot 3 – QA
9. The sum of all distinct real values of x that satisfies the equation 10𝑥 + 4/10x = 81/2 , is
A. 2log10 2
B. log10 2
C. 3log10 2
D. 4log10 2
CAT 2024 Slot 3 – QA
10. Sam can complete a job in 20 days when working alone. Mohit is twice as fast as Sam and thrice as fast as Ayna in the same job. They undertake a job with an arrangement where Sam and Mohit work together on the first day, Sam and Ayna on the second day, Mohit and Ayna on the third day, and this three-day pattern is repeated till the work gets completed. Then, the fraction of total work done by Sam is
A. 3/20
B. 3/10
C. 1/5
D. 1/20
CAT 2024 Slot 3 – QA
11. Consider the sequence 𝑡1= 1, 𝑡2= −1 and 𝑡n = (n-3)/(n-1)𝑡n-2 for n ≥ 3. Then, the value of the sum 1/𝑡2 + 1/𝑡4 + 1/𝑡6 + ……+1/𝑡2002 + 1/𝑡2024, is
A. -1026169
B. -102212
C. -1024144
D. -1023132
CAT 2024 Slot 3 – QA
12. The number of distinct real values of x, satisfying the equation
max {x,-2} – min {x,2} = |x + 2| – |x – 2|, is
CAT 2024 Slot 3 – QA
13. Aman invests Rs 4000 in a bank at a certain rate of interest, compounded annually. If the ratio of the value of the investment after 3 years to the value of the investment after 5 years is 25 : 36, then the minimum number of years required for the value of the investment to exceed Rs 20000 is
3x + ky = a
A necessary condition for the system to have no solution for (x, y), is A. 2a + k ≠ 0 B. ap + 6 = 0 C. ap – 6 = 0 D. kp + 12 ≠ 0
CAT 2024 Slot 3 – QA
17. A train travelled a certain distance at a uniform speed. Had the speed been 6 km per hour more, it would have needed 4 hours less. Had the speed been 6 km per hour less, it would have needed 6 hours more. The distance, in km, travelled by the train is
A. 780
B. 800
C. 720
D. 640
CAT 2024 Slot 3 – QA
18. The number of distinct integer solutions (x , y) of the equation |x + y| + |x – y| = 2, is
CAT 2024 Slot 3 – QA
19. Rajesh and Vimal own 20 hectares and 30 hectares of agricultural land, respectively, which are entirely covered by wheat and mustard crops. The cultivation area of wheat and mustard in the land owned by Vimal are in the ratio of 5 : 3. If the total cultivation area of wheat and mustard are in the ratio 11 : 9, then the ratio of cultivation area of wheat and mustard in the land owned by Rajesh is
A. 3:7
B. 4:3
C. 7:9
D. 1:1
CAT 2024 Slot 3 – QA
20. For any real non-zero real number x, let f(x) + 2f(1/x) = 3x. Then, the sum of all possible real values of x for which f(x) = 3, is
A. -3
B. 2
C. 3
D. -2
CAT 2024 Slot 3 – QA
21. The number of all positive integers up to 500 with non-repeating digits is
The answer is 378
If 1/(√y+√z) is the arithmetic mean of 1/√x +1/√z & 1/(√x+√y)
Then = 2/(√y+√x) = 1/(√x+√z) + 1/(√x+√y)
Rationalizing,
(2 √y-√z)/(y-z) = (√x-√y)/(x-z) + (√x-√y)/(x-y) ———- (1)
So, starting with options
If y, x & z are in AP,
⇒x-y=z-x=d & z-y=2d
⇒from (1),
RHS,
= (√x-√z)/(-d) + (√x-√y)/d=(√x-√y+√z-√x)/d
= (√z-√y)/d
LHS =(2(√x-√(y)))/(-2d)=(√z-√y)/d= RHS.
Hence, LHS = RHS
So, ⇒(b)is true.
Using the examples of the circle L
x^2+y^2+4x-6y-3=0, we can find the point of center of the circle and the radius (x^2+4x+4)+(y^2-6y+9)-4-9-3=0
(〖x+2)]^2+(〖y-3)〗^2=16
So, radius (r) = 4, Centre = (-2, 3)
DIAGRAM
OP being the radius of bigger circle (L) with center at O.
We can find the measurement of OP using trigonometry.
Sin 30^0 =OQ/OP=1/2=4/OP
⇒OP=8=radius of bigger circle (L)
Therefore, Example of the bigger circle (L) with centre (-2, 3)
and radius 8 is 〖(x+2)〗^2+〖(y-3)〗^2=8^2
Substituting x=6,in the above circle equation we can find.
〖(6+2)〗^2+〖(y-3)〗^2=64
8^2+〖(y-3)〗^2=64
(y-3)^2=0
⇒ y = 3.
So, the solution of this question is (a) (6, 3).
CAT 2024 Slot 3 – QA
22. The midpoints of sides AB, BC, and AC in ∆ ABC are M, N, and P, respectively. The medians drawn from A, B, and C intersect the line segments MP, MN and NP at X, Y, and Z, respectively. If the area of ∆ ABC is 1440 sq cm, then the area, in sq cm, of ∆XYZ is