Questions 45 to 66 carry 3 marks each.
Q. 1.
Suppose f (x, y )is a real valued function such that f (3x + 2y, 2x ‒ 5y) = 19x for all real numbers x and y the value of x for which f (x, 2x) = 27, is
Questions 45 to 66 carry 3 marks each.
Q. 2.
Let an = 46 + 8n and bn = 98 + 4n be two sequences for natural numbers n ≤ 100. Then the sum of all terms common to both the sequences is
- A).
14798
- B).
14602
- C).
15000
- D).
14900
Questions 45 to 66 carry 3 marks each.
Q. 3.
The value of 1 + (1+ 1/3)1/4 + (1+ 1/3+1/9) 1/16+ (1 + 1/3+1/9+1/27)1/64 +.......,
- A).
15/13
- B).
16/11
- C).
27/12
- D).
15/8
Questions 45 to 66 carry 3 marks each.
Q. 4.
In a regular polygon, any interior angle exceeds the exterior angle by 120 degrees. Then, the number of diagonals of this polygon is
Questions 45 to 66 carry 3 marks each.
Q. 5.
Let ∆ ABC be an isosceles triangle such that AB and AC are of equal length AD is the altitude from A on BC and BE is the altitude from B on AC if AD and BE intersect at O such that ∠AOB = 105° then AD/BE equals
- A).
sin 15°
- B).
cos 15°
- C).
2cos 15°
- D).
2sin 15°
Questions 45 to 66 carry 3 marks each.
Q. 6.
A rectangle with the largest possible area is drawn inside a semicircle of radius 2 cm then, the ratio of the lengths of the largest to the smallest side of this rectangle is
- A).
√5 : 1
- B).
1 : 1
- C).
√2 : 1
- D).
2 : 1
Questions 45 to 66 carry 3 marks each.
Q. 7.
The number of coins collected per week by two coin-collectors A and B are in the ratio 3 : 4. If the total number of coins collected by A in 5 weeks is a multiple of 7, and the total number of coins collected by B in 3 weeks is a multiple of 24, then the minimum possible number of coins collected by A in one week is
Questions 45 to 66 carry 3 marks each.
Q. 8.
A fruit seller has a stock of mangoes, bananas and apples with at least one fruit of each type. At the beginning of a day, the number of mangoes make up 40% of his stock. That day, he sells half of the mangoes, 96 bananas and 40% of the apples. At the end of the day, he ends up selling 50% of the fruits. The smallest possible total number of fruits in the stock at the beginning of the day is
Questions 45 to 66 carry 3 marks each.
Q. 9.
Gautam and Suhani, working together, can ï¬nish a job in 20 days. If Gautam does only 60% of his usual work on a day, Suhani must do 150% of her usual work on that day to exactly make up for it. Then, the number of days required by the faster worker to complete the job working alone is
Questions 45 to 66 carry 3 marks each.
Q. 10.
Anil mixes cocoa with sugar in the ratio 3 : 2 to prepare mixture A, and coffee with sugar in the ratio 7 : 3 to prepare mixture B. He combines mixtures A and B in the ratio 2 : 3 to make a new mixture C. If he mixes C with an equal amount of milk to make a drink, then the percentage of sugar in this drink will be
- A).
21
- B).
16
- C).
24
- D).
17
Questions 45 to 66 carry 3 marks each.
Q. 11.
There are three persons A, B, and C in a room. If a person D joins the room, the average weight of the persons in the rooms reduces by x kg. instead of D, if person E joins the room, the average weight of the person s in the room increases by 2x kg. If the weight of E is 12 kg more than that of D, then tha value of x is
- A).
0.5
- B).
2
- C).
1
- D).
1.5
Questions 45 to 66 carry 3 marks each.
Q. 12.
A boat takes 2 hours to travel downsteam a river from port A to port B, and 3 hours to return to port A. another boat takes a total of 6 hours to travel from port B to port A and return to port B If the speeds of the boats and the river are constant, then the time , in hours, taken by the slower boat to travel from port A to port B is
- A).
3(√5 ‒1)
- B).
3(3‒√5)
- C).
3 (3 + √5)
- D).
12 (√5 ‒ 2)
Questions 45 to 66 carry 3 marks each.
Q. 13.
A merchant purchases a cloth at a rate of Rs.100 per meter and receives 5 cm length of cloth free for every 100 cm length of cloth purchased by him. He sells the same cloth at a rate of Rs.110 per meter but cheats his customers by giving 95 cm length of cloth for every 100 cm length of cloth purchased by the customers. If the merchant provides a 5% discount, the resulting proï¬t earned by him is
- A).
16%
- B).
15.5%
- C).
9.7%
- D).
4.2%
Questions 45 to 66 carry 3 marks each.
Q. 14.
Rahul, Rakshita and Gurmeet, working together, would have taken more than 7 days to ï¬nish a job. On the other hand, Rahul and Gurmeet, working together would have taken less than 15 days to ï¬nish the job. However, they all worked together for 6 days, followed by Rakshita, who worked alone for 3 more days to ï¬nish the job. If Rakshita had worked alone on the job then the number of days she would have taken to ï¬nish the job, cannot be
- A).
20
- B).
21
- C).
16
- D).
17
Questions 45 to 66 carry 3 marks each.
Q. 15.
The population of a town in 2020 was 100000. The population decreased by y% from the year 2020 to 2021 and increased by x% from the year 2021 to 2022, where x and y are two natural numbers. If population in 2022 was greater than the population in 2020 and the the difference between x and y is 10, then the lowest possible population of the town in 2021 was
- A).
72000
- B).
74000
- C).
73000
- D).
75000
Questions 45 to 66 carry 3 marks each.
Q. 16.
The sum of the ï¬rst two natural numbers, each having 15 factors (including 1 and the number itself), is
Questions 45 to 66 carry 3 marks each.
Q. 17.
A quadratic equation x2 +bx +c = 0 has two real roots. If the difference between the reciprocals of the roots is 1/3, and the sum of the reciprocals of the squares of the roots is 5/9, then the largest possible value of (b + c) is
Questions 45 to 66 carry 3 marks each.
Q. 18.
Let π be any natural number, such 5 π-1 < 3 π+1 then, the least integer value of m that satisfies 3 π+1 < 2 n+ m for each such π is
Questions 45 to 66 carry 3 marks each.
Q. 19.
If x is a positive real number such that x8 + (1/x)8 = 47, then the value of x9 + (1/x)9 is
- A).
30√5
- B).
34√5
- C).
36√5
- D).
40√5
Questions 45 to 66 carry 3 marks each.
Q. 20.
- A).
15
- B).
33
- C).
55
- D).
25
Questions 45 to 66 carry 3 marks each.
Q. 21.
- A).
log4 (23/2)
- B).
log4 (7/2)
- C).
log4 7
- D).
log4 (3/2)
Questions 45 to 66 carry 3 marks each.
Q. 22.
Let π and m be two positive integers such that there are exactly 41 integers greater than 8m and less than 8π , which can be expressed as powers of 2. then, smallest possible of n + m is.
- A).
42
- B).
14
- C).
44
- D).
16
