Mathematics Questions & Answers for Competitive Exams

1441. The price of a car is decreased by 15% and 20% in two successive years respectively. What percentage of the price of the car is decreased after two years?

(A) 32%
(B) 25%
(C) 46%
(D) 15%

1442. If the radius of a sphere is increased by 5%, then by what percentage will the surface area of the sphere increase?

(A) 13.25%
(B) 11.25%
(C) 10.25%
(D) 15.25%

1443. In a triangle ABC, D and E are two points on sides AB and AC, respectively, such that DE is parallel to BC and AD : DB = 3 : 5. If AC = 5.6 cm, then find the value (in cm) of AE.

(A) 2.3
(B) 2.1
(C) 1.9
(D) 2.5

1444. A father is presently 3 times his daughter’s age. After 10 years he will be twice as old as her. Find the daughter’s present age.

(A) 5 years
(B) 10 years
(C) 20 years
(D) 15 years

1445. A shopkeeper charges his customer 14% more than the cost price. If a customer paid ₹18,240 for a mobile phone, then the cost price of the mobile phone was:

(A) ₹20,793.60
(B) ₹15,686.40
(C) ₹16,600
(D) ₹16,000

1446. How many numbers between 10 and 65 are divisible by 2, 3 and 4?

(A) 3
(B) 7
(C) 9
(D) 5

1447. An interval of 2 hours 25 minutes is wrongly estimated by 2 hours 30.5 minutes. The error percentage is:

(A)
(B)
(C)
(D)

1448. Two circles of radii 16 cm and 4 cm, respectively, touch each other externally at Point A. PQ is the direct common tangent of these circles with centres C1 and C2, respectively. What is the length of PQ?

(A) 15 cm
(B) 20 cm
(C) 16 cm
(D) 18 cm

1449. A’s marks in Mathematics are directly proportional to practice time. In 6 hours of practice, A gets 70 marks. What should be the practice time (approximately) to get 90 marks?

(A) 8 hours
(B) 8.3 hours
(C) 7 hours
(D) 7.7 hours

1450. Let C be a circle with center O and AB be a chord of C such that the length of AB is equal to the radius of C. Let D be any point on major arc of AB. Find ∠AOB and ∠ADB, respectively.

(A) 120°; 100°
(B) 60°; 30°
(C) 100°; 80°
(D) 90°; 60°

Total Quizz:- 2541

Mathematics

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1441. The price of a car is decreased by 15% and 20% in two successive years respectively. What percentage of the price of the car is decreased after two years?

1442. If the radius of a sphere is increased by 5%, then by what percentage will the surface area of the sphere increase?

1443. In a triangle ABC, D and E are two points on sides AB and AC, respectively, such that DE is parallel to BC and AD : DB = 3 : 5. If AC = 5.6 cm, then find the value (in cm) of AE.

1444. A father is presently 3 times his daughter’s age. After 10 years he will be twice as old as her. Find the daughter’s present age.

1445. A shopkeeper charges his customer 14% more than the cost price. If a customer paid ₹18,240 for a mobile phone, then the cost price of the mobile phone was:

1446. How many numbers between 10 and 65 are divisible by 2, 3 and 4?

1447. An interval of 2 hours 25 minutes is wrongly estimated by 2 hours 30.5 minutes. The error percentage is:

1448. Two circles of radii 16 cm and 4 cm, respectively, touch each other externally at Point A. PQ is the direct common tangent of these circles with centres C1 and C2, respectively. What is the length of PQ?

1449. A’s marks in Mathematics are directly proportional to practice time. In 6 hours of practice, A gets 70 marks. What should be the practice time (approximately) to get 90 marks?

1450. Let C be a circle with center O and AB be a chord of C such that the length of AB is equal to the radius of C. Let D be any point on major arc of AB. Find ∠AOB and ∠ADB, respectively.

Total Quizz:- 2541

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1441. The price of a car is decreased by 15% and 20% in two successive years respectively. What percentage of the price of the car is decreased after two years?

1442. If the radius of a sphere is increased by 5%, then by what percentage will the surface area of the sphere increase?

1443. In a triangle ABC, D and E are two points on sides AB and AC, respectively, such that DE is parallel to BC and AD : DB = 3 : 5. If AC = 5.6 cm, then find the value (in cm) of AE.

1444. A father is presently 3 times his daughter’s age. After 10 years he will be twice as old as her. Find the daughter’s present age.

1445. A shopkeeper charges his customer 14% more than the cost price. If a customer paid ₹18,240 for a mobile phone, then the cost price of the mobile phone was:

1446. How many numbers between 10 and 65 are divisible by 2, 3 and 4?

1447. An interval of 2 hours 25 minutes is wrongly estimated by 2 hours 30.5 minutes. The error percentage is:

1448. Two circles of radii 16 cm and 4 cm, respectively, touch each other externally at Point A. PQ is the direct common tangent of these circles with centres C1 and C2, respectively. What is the length of PQ?

1449. A’s marks in Mathematics are directly proportional to practice time. In 6 hours of practice, A gets 70 marks. What should be the practice time (approximately) to get 90 marks?

1450. Let C be a circle with center O and AB be a chord of C such that the length of AB is equal to the radius of C. Let D be any point on major arc of AB. Find ∠AOB and ∠ADB, respectively.

Total Quizz:- 2541

Mathematics

English Topic Wise Quizz

Current Affairs Topic Wise Quizz

Hindi Topic Wise Quizz

Important Links

Subjects

Subjects

Exams