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Mathematics MCQs

MCQs on Algebra, Calculus, Statistics and Geometry

47 Questions
Subject Preparation Guide

Prepare Mathematics with confidence

Develop speed and accuracy in arithmetic, algebra, geometry, percentages, ratios and other quantitative concepts.

ArithmeticAlgebraGeometryPercentages and Ratios
Helpful for academic exams, aptitude tests, NTS and quantitative competitive papers.
Mathematics preparation illustration
41
Medium fpsc ppsc nts

In a right triangle if one angle is 30° what is the other acute angle?

  • A 45°
  • B 50°
  • C 60°
  • D 70°
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Correct Answer: Option C — 60°
Explanation: Sum of angles = 180°. With 90° and 30° the third angle = 180°-90°-30° = 60°. The 30-60-90 triangle has side ratios 1:√3:2 and is one of the most important special triangles in mathematics. It appears extensively in trigonometry geometry and physics problems in all levels of competitive examinations.
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42
Medium css fpsc ppsc

What is the value of log base 10 of 1000?

  • A 2
  • B 3
  • C 4
  • D 5
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Correct Answer: Option B — 3
Explanation: 3! = 3 × 2 × 1 = 6. Factorial of n is the product of all positive integers from 1 to n. Factorials are fundamental in permutations combinations probability calculations and the binomial theorem. Key values to memorize include 0!=1 1!=1 2!=2 3!=6 4!=24 5!=120 and 6!=720 for fast competitive exam solutions.
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43
Medium fpsc ppsc nts

If 3x - 7 = 2x + 5 what is x?

  • A 10
  • B 12
  • C 14
  • D 16
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Correct Answer: Option B — 12
Explanation: Subtract 2x: x - 7 = 5. Add 7: x = 12. Solving linear equations with variables on both sides is a core algebraic skill. Such equations frequently appear in word problems about ages work rates and number relationships in competitive exams. The key step is collecting like terms on each side methodically.
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44
Medium fpsc ppsc nts

What is the compound interest on Rs 1000 for 2 years at 10% per annum?

  • A Rs 200
  • B Rs 210
  • C Rs 220
  • D Rs 100
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Correct Answer: Option B — Rs 210
Explanation: CI = P(1+r/100)ⁿ - P = 1000(1.1)² - 1000 = 1210 - 1000 = Rs 210. Compound interest exceeds simple interest because interest is earned on previously accumulated interest. CI problems appear in banking and finance sections of competitive exams and require correct application of the compound interest formula.
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45
Medium fpsc ppsc nts

Two numbers are in ratio 5:3 and their sum is 40. What is the larger number?

  • A 20
  • B 25
  • C 30
  • D 35
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Correct Answer: Option B — 25
Explanation: Let numbers be 5x and 3x. Sum = 8x = 40 so x = 5. Larger = 5×5 = 25. Ratio problems requiring algebraic substitution are consistent in competitive exams. Using a common multiplier x to represent ratio parts then solving with the given total sum or difference is the most reliable standard method.
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46
Medium fpsc ppsc nts

If the simple interest on Rs 1000 for 2 years is Rs 100 what is the rate?

  • A 4%
  • B 5%
  • C 6%
  • D 8%
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Correct Answer: Option B — 5%
Explanation: SI = (P×R×T)/100 → 100 = (1000×R×2)/100 → 100 = 20R → R = 5%. Simple interest problems are standard in competitive exams. The ability to rearrange the SI formula to find principal rate or time is a key skill. Always identify which variable is unknown and rearrange accordingly before substituting values.
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47
Medium css fpsc ppsc nts

Simplify: (a² - b²) divided by (a - b)

  • A a + b
  • B a - b
  • C a² + b²
  • D ab
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Correct Answer: Option A — a + b
Explanation: a² - b² factors as (a+b)(a-b) using the difference of squares identity. Dividing by (a-b) cancels that factor leaving (a+b). Recognizing algebraic identities including difference of squares perfect square trinomials and sum or difference of cubes is essential for quickly simplifying expressions in competitive exam algebra sections.
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