Join WhatsApp ChannelDaily MCQs & Exam Updates

PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

86 Questions
Exam Preparation Guide

How to prepare for PPSC

PPSC examinations recruit candidates for Punjab government departments and commonly test general knowledge, current affairs, English and post-related subjects.

Punjab AffairsGeneral KnowledgeCurrent AffairsEnglish
Give special attention to Punjab geography, history and administration alongside the advertised post’s specialist syllabus.
Start PracticingTake a Mock Test
PPSC preparation illustration
All Subjects Biology Chemistry Computer Science Current Affairs English Everyday Science General Knowledge Islamic Studies Mathematics Pakistan Studies Physics
11
Mathematics Hard

What is the number of diagonals in a polygon with n sides?

  • An(n-1)/2
  • Bn(n-3)/2
  • Cn(n+1)/2
  • Dn²/2
Permalink
Correct Answer: Option B — n(n-3)/2
Explanation: Diagonals = n(n-3)/2. A pentagon (n=5) has 5×2/2 = 5 diagonals. This formula comes from selecting 2 vertices from n vertices (C(n 2)) then subtracting n sides. Polygon formulas for diagonals interior angles and exterior angles are standard geometry topics tested in higher competitive exam papers.
Submitted by: PaperMCQs
12
Mathematics Medium

If variance of a data set is 25 what is the standard deviation?

  • A5
  • B10
  • C15
  • D25
Permalink
Correct Answer: Option A — 5
Explanation: Standard deviation = √variance = √25 = 5. Variance is the average of squared deviations from the mean. Standard deviation being the square root is expressed in the same units as the original data making it more interpretable. Both quantify data spread and appear in statistics-based competitive exam questions.
Submitted by: PaperMCQs
13
Mathematics Hard

The sum of a geometric series with a=2 r=3 and 4 terms is?

  • A80
  • B90
  • C100
  • D110
Permalink
Correct Answer: Option A — 80
Explanation: Sum = a(rⁿ-1)/(r-1) = 2(3⁴-1)/(3-1) = 2(80)/2 = 80. The finite geometric series formula applies when r≠1. For infinite series with |r|<1 sum = a/(1-r). Geometric series appear in competitive exam sequences and progressions sections and in financial problems involving compound growth scenarios.
Submitted by: PaperMCQs
14
Mathematics Hard

How many prime numbers are between 1 and 50?

  • A14
  • B15
  • C16
  • D17
Permalink
Correct Answer: Option B — 15
Explanation: Primes: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 = 15 primes. The Sieve of Eratosthenes systematically eliminates multiples to identify primes. Counting and identifying primes within a range is a number theory skill tested in competitive exams and is useful for quick factorization and divisibility checks.
Submitted by: PaperMCQs
15
Mathematics Medium

What is the nth term of arithmetic sequence 3 7 11 15?

  • A4n-1
  • B4n+1
  • C3n+1
  • D2n+3
Permalink
Correct Answer: Option A — 4n-1
Explanation: First term a=3 common difference d=4. nth term = a+(n-1)d = 3+4(n-1) = 4n-1. Verification: n=1→3 n=2→7 n=3→11 confirms correctness. Finding nth term formulas for arithmetic sequences is essential for sequences and series questions in competitive exams and is also used in salary progression and installment problems.
Submitted by: PaperMCQs
16
Mathematics Medium

What is the equation of a circle centered at origin with radius r?

  • Ax² + y² = r
  • Bx² - y² = r²
  • Cx² + y² = r²
  • Dx + y = r²
Permalink
Correct Answer: Option C — x² + y² = r²
Explanation: Standard equation of circle at origin: x²+y² = r². For center (h k): (x-h)²+(y-k)² = r². Circle equations including finding center and radius from general form and tangent line conditions are standard coordinate geometry topics in higher competitive exam papers including CSS and PMS.
Submitted by: PaperMCQs
17
Mathematics Medium

Solve the absolute value equation: |2x - 3| = 7

  • Ax=5 or x=-2
  • Bx=5 or x=2
  • Cx=-5 or x=2
  • Dx=4 or x=-2
Permalink
Correct Answer: Option A — x=5 or x=-2
Explanation: Two cases: 2x-3=7 → x=5 or 2x-3=-7 → x=-2. Absolute value equations always yield two cases. This concept appears in both equation and inequality forms in competitive exams. Always solve both cases and verify each solution satisfies the original equation to avoid extraneous solutions.
Submitted by: PaperMCQs
18
Mathematics Medium

What is the value of log(ab) in terms of log a and log b?

  • Alog a - log b
  • Blog a × log b
  • Clog a + log b
  • Dlog a / log b
Permalink
Correct Answer: Option C — log a + log b
Explanation: log(ab) = log a + log b is the product rule of logarithms. The three fundamental log rules: log(ab)=log a+log b (product) log(a/b)=log a-log b (quotient) log(aⁿ)=n×log a (power). These rules simplify complex logarithmic expressions and are heavily tested in competitive exam algebra.
Submitted by: PaperMCQs
19
Mathematics Medium

If f(x) = 2x² + 3x - 5 what is f(2)?

  • A9
  • B10
  • C11
  • D13
Permalink
Correct Answer: Option A — 9
Explanation: f(2) = 2(4) + 3(2) - 5 = 8 + 6 - 5 = 9. Function evaluation requires substituting the given value and simplifying carefully following order of operations. This skill is fundamental for calculus topics and appears in algebra sections of competitive exams testing polynomial function evaluation.
Submitted by: PaperMCQs
20
Mathematics Medium

What is the value of C(5 2)?

  • A5
  • B10
  • C15
  • D20
Permalink
Correct Answer: Option B — 10
Explanation: f(2) = 2(2²) + 3(2) - 5 = 8 + 6 - 5 = 9. Function evaluation requires substituting the given input value and carefully following order of operations. This skill is essential for polynomial and composite functions and appears in algebra and pre-calculus sections of competitive exams testing structured algebraic manipulation.
Submitted by: PaperMCQs
Other Exams
CSS MCQs PMS MCQs FPSC MCQs PPSC MCQs NTS MCQs
Mock Tests
Quick Test (20 Q) Full Mock (60 Q)