A. Rs. 18
B. Rs. 18.50
C. Rs. 19
D. Rs. 19.50
✅ The correct answer is option A. Rs. 18.
Mathematics
Practice the latest Mathematics MCQs with answers and explanations to excel in exams, interviews, and job tests. Our collection covers algebra, calculus, geometry, trigonometry, statistics, probability, arithmetic, matrices, and differential equations. These Mathematics multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, university entry tests, and recruitment assessments. Strengthen your problem-solving skills, improve accuracy, and boost your exam performance with our updated Mathematics MCQs.
42. How much time will it take for an amount of Rs. 900 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
A. 2 years
B. 3 years
C. 1 year
D. 4 years
✅ The correct answer is option A. 2 years.
P = Rs.900
P = Rs.900
SI = Rs.81
T = ?
R = 4.5%
T=100×SI/PR =100*81/900*4.5 =2 years
43. A boy has nine trousers and 12 shirts. In how many different ways can he select a trouser and a shirt?
A. 21
B. 12
C. 9
D. 108
✅ The correct answer is option D. 108.
The boy can select one trouser in nine ways.
The boy can select one trouser in nine ways.
44. In what ratio must water be mixed with milk to gain 16 2/3 % by selling the mixture at cost price?
A. 1:6
B. 2:3
C. 4:3
D. 6:1
✅ The correct answer is option A. 1:6.
45. The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?
A. 45
B. 50
C. 51.4 approx.
D. 54.6 approx.
✅ The correct answer is option C. 51.4 approx..
46. The length of a rope by which a cow must be tethered in order that she may be able to graze an area of 9856 sq.m is:________?
A. 56m
B. 64m
C. 88m
D. 168m
✅ The correct answer is option A. 56m.
47. In a company, 60% of the employees are men, of this 40 % are drawing more than Rs. 50000 per year. 36% of the total employees of the company draw more than Rs.50000 per year then what is the percentage of women who are drawing less than Rs. 5000 per year?
A. 70%
B. 60%
C. 40%
D. 30%
✅ The correct answer is option A. 70%.
48. Surface area of a sphere is 2464 cm2. If its radius is doubled, then the surface area of _________?the new sphere will be
A. 4920 cm2
B. 4727 cm2
C. 9856 cm2
D. 19712 cm2
✅ The correct answer is option C. 9856 cm2.
49. In how many different ways can the letters of the word ‘OPTICAL’ be arranged so that the vowels always come together?
A. 120
B. 720
C. 4320
D. 2160
✅ The correct answer is option B. 720.
50. A rectangular carpet has an area of 60 sq.m its diagonal and longer side together equal 5 times the shorter side. The length of the carpet is:_________?
A. 5m
B. 12m
C. 13m
D. 14.5m
✅ The correct answer is option B. 12m.