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.

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📘 Time and Work Mcqs MCQs
📘 Volumes MCQs

236. Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is :__________?

by
A. 2 : 5
B. 3 : 5
C. 4 : 5
D. 6 : 7
✅ The correct answer is option C. 4 : 5.
Let the third number be x.

Then, first number = 120% of x = 120x/100 = 6x/5 second numbet = 150% of x = 150x/100 = 3x/2 Ratio of first two numbers = 6x/5 : 3x/2 =12x : 15x = 4 : 5.

239. A can do a certain work-in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in_________?

by
A. 15 days
B. 20 days
C. 25 days
D. 30 days
✅ The correct answer is option C. 25 days.
(A + B)’s 1 day’s work = 1/10; C’s 1 day’s work = 1/50 (A + B + C)’s 1 day’s work = 1/10 + 1/50 = 6/50 = 3/25 Also, A’s 1 day’s work = (B + C)’s 1 day’s work

From (i) and (ii), we get : 2 x (A’s 1 day’s work) = 3/25 As 1 day’s work = 3/50 B’s 1 day’s work = 1/10 – 3/50 = 2/50 = 1/25 So, B alone could do the work in 25 days.