Q1:

Ratio, Proportion & Variation

Medium

The ratio of the number of students in the morning shift and afternoon shift of a school was 13 : 9. After 21 students moved from the morning shift to the afternoon shift, this ratio became 19 : 14. Next, some new students joined the morning and afternoon shifts in the ratio 3 : 8 and then the ratio of the number of students in the morning shift and the afternoon shift became 5 : 4. The number of new students who joined is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 1

Q2:

Circles

Hard

In a circle with center CC and radius 626\sqrt{2} cm, PQPQ and SRSR are two parallel chords separated by one of the diameters. If ∠PQC=45∘\angle PQC = 45^\circ, and the ratio of the perpendicular distance of PQPQ and SRSR from CC is 3:23:2, then the area, in sq. cm, of the quadrilateral PQRSPQRS is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 2

Q3:

Functions

Hard

Let 3≤x≤63 \leq x \leq 6 and [x2]=[x]2[x^2] = [x]^2, where [x][x] is the greatest integer not exceeding xx. If set SS represents all feasible values of xx, then a possible subset of SS is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 3

Q4:

Integral Solutions

Medium

The number of distinct pairs of integers (x,y)(x, y) satisfying the inequalities x>y≥3x > y \geq 3 and x+y<14x + y < 14 is

16
Correct Answer
Explanation for 2025 Slot 1 QA question 4

Q5:

Polynomials

Easy

The number of non-negative integer values of kk for which the quadratic equation x2−5x+k=0x^2 - 5x + k = 0 has only integer roots, is

Q6:

Straight Lines

Medium

The (x,y)(x, y) coordinates of vertices P, Q and R of a parallelogram PQRS are (−3,−2)(-3, -2), (1,−5)(1, -5) and (9,1)(9, 1), respectively. If the diagonal SQ intersects the xx-axis at (a,0)(a, 0), then the value of aa is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 6

Q7:

Factorisation

Medium

In a 3-digit number N, the digits are non-zero and distinct such that none of the digits is a perfect square, and only one of the digits is a prime number. Then, the number of factors of the minimum possible value of N is

Q8:

Permutation & Combination

Medium

A cafeteria offers 5 types of sandwiches. Moreover, for each type of sandwich, a customer can choose one of 4 breads and opt for either small or large sized sandwich. Optionally, the customer may also add up to 2 out of 6 available sauces. The number of different ways in which an order can be placed for a sandwich, is

Answer options
Option 1
Correct Answer
Explanation for 2025 Slot 1 QA question 8

Q9:

Progression & Series

Medium

In the set of consecutive odd numbers {1,3,5,…,57}\{1, 3, 5, \ldots, 57\}, there is a number kk such that the sum of all the elements less than kk is equal to the sum of all the elements greater than kk. Then, kk equals

Answer options
Option 1
Correct Answer
Explanation for 2025 Slot 1 QA question 9

Q10:

Minima & Maxima

Medium

A value of cc for which the minimum value of f(x)=x2−4cx+8cf(x) = x^2 - 4cx + 8c is greater than the maximum value of g(x)=−x2+3cx−2cg(x) = -x^2 + 3cx - 2c, is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 10

Q11:

Simple & Compound Interest

Hard

At a certain simple rate of interest, a given sum amounts to Rs 13920 in 3 years, and to Rs 18960 in 6 years and 6 months. If the same given sum had been invested for 2 years at the same rate as before but with interest compounded every 6 months, then the total interest earned, in rupees, would have been nearest to

Answer options
Option 4
Correct Answer
Explanation for 2025 Slot 1 QA question 11

Q12:

Quadrilaterals

Medium

If the length of a side of a rhombus is 36 cm and the area of the rhombus is 396 sq. cm, then the absolute value of the difference between the lengths, in cm, of the diagonals of the rhombus is

60
Correct Answer
Explanation for 2025 Slot 1 QA question 12

Q13:

Progression & Series

Hard

For any natural number kk, let ak=3ka_k = 3^k. The smallest natural number mm for which {(a1)1×(a2)2×…×(a20)20}<{a21×a22×…×a(20+m)}\{(a_1)^1 \times (a_2)^2 \times \ldots \times (a_{20})^{20}\} < \{a_{21} \times a_{22} \times \ldots \times a_{(20+m)}\}, is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 13

Q14:

Time, Speed & Distance

Hard

Shruti travels a distance of 224 km in four parts for a total travel time of 3 hours. Her speeds in these four parts follow an arithmetic progression, and the corresponding time taken to cover these four parts follow another arithmetic progression. If she travels at a speed of 960 meters per minute for 30 minutes to cover the first part, then the distance, in meters, she travels in the fourth part is

Answer options
Option 3
Correct Answer
Explanation for 2025 Slot 1 QA question 14

Q15:

Mixture & Alligation

Medium

A container holds 200 litres of a solution of acid and water, having 30% acid by volume. Atul replaces 20% of this solution with water, then replaces 10% of the resulting solution with acid, and finally replaces 15% of the solution thus obtained, with water. The percentage of acid by volume in the final solution obtained after these three replacements, is nearest to

Answer options
Option 1
Correct Answer
Explanation for 2025 Slot 1 QA question 15

Q16:

Time & Work

Hard

Arun, Varun and Tarun, if working alone, can complete a task in 24, 21, and 15 days, respectively. They charge Rs 2160, Rs 2400, and Rs 2160 per day, respectively, even if they are employed for a partial day. On any given day, any of the workers may or may not be employed to work. If the task needs to be completed in 10 days or less, then the minimum possible amount, in rupees, required to be paid for the entire task is

Answer options
Option 1
Correct Answer
Explanation for 2025 Slot 1 QA question 16

Q17:

Linear Equation

Medium

If a−6b+6c=4a - 6b + 6c = 4 and 6a+3b−3c=506a + 3b - 3c = 50, where aa, bb and cc are real numbers, the value of 2a+3b−3c2a + 3b - 3c is

Answer options
Option 2
Correct Answer
Explanation for 2025 Slot 1 QA question 17

Q18:

Percentages

Medium

In a class, there were more than 10 boys and a certain number of girls. After 40% of the girls and 60% of the boys left the class, the remaining number of girls was 8 more than the remaining number of boys. Then, the minimum possible number of students initially in the class was

55
Correct Answer
Explanation for 2025 Slot 1 QA question 18

Q19:

Percentages

Medium

Kamala divided her investment of Rs 100000 between stocks, bonds, and gold. Her investment in bonds was 25% of her investment in gold. With annual returns of 10%, 6%, 8% on stocks, bonds, and gold, respectively, she gained a total amount of Rs 8200 in one year. The amount, in rupees, that she gained from the bonds, was

900
Correct Answer
Explanation for 2025 Slot 1 QA question 19

Q20:

Linear Equation

Easy

Stocks A, B and C are priced at rupees 120, 90 and 150 per share, respectively. A trader holds a portfolio consisting of 10 shares of stock A, and 20 shares of stocks B and C put together. If the total value of her portfolio is rupees 3300, then the number of shares of stock B that she holds, is

15
Correct Answer
Explanation for 2025 Slot 1 QA question 20

Q21:

Logarithms

Hard

The number of distinct integers nn for which log⁡1/4(n2−7n+11)>0\log_{1/4}(n^2 - 7n + 11) > 0, is

Answer options
Option 1
Correct Answer
Explanation for 2025 Slot 1 QA question 21

Q22:

Profit & Loss

Medium

A shopkeeper offers a discount of 22% on the marked price of each chair, and gives 13 chairs to a customer for the discounted price of 12 chairs to earn a profit of 26% on the transaction. If the cost price of each chair is Rs 100, then the marked price, in rupees, of each chair is

175
Correct Answer
Explanation for 2025 Slot 1 QA question 22

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