🔢 100 Mathematics GK Questions with Answers
Test your mathematical knowledge with these 100 Mathematics General Knowledge Questions covering numbers, arithmetic, geometry, algebra, statistics, probability, famous mathematicians, mathematical constants, sequences and important mathematical concepts.
1What is the smallest prime number?
Numbers & Arithmetic
Answer: 2.
2What is the only even prime number?
Numbers & Arithmetic
Answer: 2.
3What is the smallest positive integer?
Numbers & Arithmetic
Answer: 1.
4What is the value of 10 × 10?
Numbers & Arithmetic
Answer: 100.
5What is the square root of 144?
Numbers & Arithmetic
Answer: 12.
6What is 15 × 15?
Numbers & Arithmetic
Answer: 225.
7What is 100 ÷ 4?
Numbers & Arithmetic
Answer: 25.
8What is the cube of 3?
Numbers & Arithmetic
Answer: 27.
9What is the square of 25?
Numbers & Arithmetic
Answer: 625.
10What is the sum of the first five positive integers?
Numbers & Arithmetic
Answer: 15.
11What is the Roman numeral for 50?
Numbers & Arithmetic
Answer: L.
12What is the Roman numeral for 100?
Numbers & Arithmetic
Answer: C.
13What is the greatest two-digit number?
Numbers & Arithmetic
Answer: 99.
14What is the smallest three-digit number?
Numbers & Arithmetic
Answer: 100.
15What is 7 factorial?
Numbers & Arithmetic
Answer: 5,040.
16What is the greatest common divisor of 12 and 18?
Numbers & Arithmetic
Answer: 6.
17What is the least common multiple of 4 and 6?
Numbers & Arithmetic
Answer: 12.
18What is 25% of 200?
Numbers & Arithmetic
Answer: 50.
19What is 3/4 expressed as a percentage?
Numbers & Arithmetic
Answer: 75%.
20What is the decimal equivalent of 1/2?
Numbers & Arithmetic
Answer: 0.5.
21How many sides does a triangle have?
Geometry
Answer: 3.
22How many sides does a quadrilateral have?
Geometry
Answer: 4.
23How many degrees are in a right angle?
Geometry
Answer: 90°.
24How many degrees are in a straight angle?
Geometry
Answer: 180°.
25How many degrees are in a full angle?
Geometry
Answer: 360°.
26What is the sum of the angles in a triangle?
Geometry
Answer: 180°.
27What is the sum of the interior angles of a quadrilateral?
Geometry
Answer: 360°.
28What is the area of a rectangle?
Geometry
Answer: Length × Width.
29What is the perimeter of a rectangle?
Geometry
Answer: 2 × (Length + Width).
30What is the area of a square with side length 5?
Geometry
Answer: 25 square units.
31What is the perimeter of a square with side length 8?
Geometry
Answer: 32 units.
32What is the formula for the area of a circle?
Geometry
Answer: πr².
33What is the formula for the circumference of a circle?
Geometry
Answer: 2πr.
34Approximately what is the value of π?
Geometry
Answer: Approximately 3.14159.
35What is a polygon with eight sides called?
Geometry
Answer: Octagon.
36What is a polygon with six sides called?
Geometry
Answer: Hexagon.
37What is a polygon with five sides called?
Geometry
Answer: Pentagon.
38What is a triangle with three equal sides called?
Geometry
Answer: Equilateral triangle.
39What is a triangle with two equal sides called?
Geometry
Answer: Isosceles triangle.
40What is a triangle with one 90° angle called?
Geometry
Answer: Right triangle.
41What is the value of x if x + 5 = 12?
Algebra
Answer: x = 7.
42What is the value of x if 2x = 18?
Algebra
Answer: x = 9.
43What is the value of x if 3x + 2 = 11?
Algebra
Answer: x = 3.
44What is an equation with an equal sign called?
Algebra
Answer: An equation.
45What is a mathematical expression containing a variable called?
Algebra
Answer: An algebraic expression.
46What is the coefficient of x in 7x + 3?
Algebra
Answer: 7.
47What is x² called?
Algebra
Answer: x squared.
48What is the highest power of the variable in a linear equation?
Algebra
Answer: 1.
49What is a polynomial of degree two called?
Algebra
Answer: Quadratic polynomial.
50What is the quadratic formula used to solve?
Algebra
Answer: Quadratic equations.
51What is the value of 2³?
Algebra
Answer: 8.
52What is 5² + 3²?
Algebra
Answer: 34.
53What is the value of (a + b)²?
Algebra
Answer: a² + 2ab + b².
54What is the value of (a − b)²?
Algebra
Answer: a² − 2ab + b².
55What is a variable in mathematics?
Algebra
Answer: A symbol representing a quantity whose value may vary.
56What is the arithmetic average of a set of numbers called?
Statistics & Probability
Answer: Mean.
57What is the middle value in an ordered data set called?
Statistics & Probability
Answer: Median.
58What is the most frequently occurring value in a data set called?
Statistics & Probability
Answer: Mode.
59What does probability measure?
Statistics & Probability
Answer: The likelihood of an event occurring.
60What is the probability of a certain event?
Statistics & Probability
Answer: 1, or 100%.
61What is the probability of an impossible event?
Statistics & Probability
Answer: 0.
62What is the probability of getting heads when a fair coin is tossed?
Statistics & Probability
Answer: 1/2 or 50%.
63How many possible outcomes are there when a standard six-sided die is rolled?
Statistics & Probability
Answer: 6.
64What is the range of a data set?
Statistics & Probability
Answer: The difference between the largest and smallest values.
65What type of graph is commonly used to display data with rectangular bars?
Statistics & Probability
Answer: Bar graph.
66What graph is commonly used to show parts of a whole as sectors of a circle?
Statistics & Probability
Answer: Pie chart.
67What does a histogram display?
Statistics & Probability
Answer: The distribution of numerical data across intervals or bins.
68What is the probability of rolling a 6 on a fair die?
Statistics & Probability
Answer: 1/6.
69What is the probability of drawing an ace from a standard 52-card deck?
Statistics & Probability
Answer: 4/52 = 1/13.
70What is standard deviation used to measure?
Statistics & Probability
Answer: The spread or dispersion of data around the mean.
71Who is known as the father of geometry?
Mathematicians
Answer: Euclid.
72Who wrote the ancient mathematical work “Elements”?
Mathematicians
Answer: Euclid.
73Which mathematician is famous for the Pythagorean theorem?
Mathematicians
Answer: Pythagoras.
74Which mathematician is associated with the number π?
Mathematicians
Answer: π was studied by many mathematicians; Archimedes made an important early calculation of its bounds.
75Who was Srinivasa Ramanujan?
Mathematicians
Answer: An Indian mathematician renowned for major contributions to number theory, infinite series and related areas.
76Which mathematician is associated with the Fibonacci sequence in the Western mathematical tradition?
Mathematicians
Answer: Leonardo of Pisa, commonly known as Fibonacci.
77Who developed calculus independently of Leibniz?
Mathematicians
Answer: Isaac Newton.
78Who developed calculus independently of Newton?
Mathematicians
Answer: Gottfried Wilhelm Leibniz.
79Which mathematician is associated with the Cartesian coordinate system?
Mathematicians
Answer: René Descartes.
80Which mathematician is associated with the famous constant e?
Mathematicians
Answer: Leonhard Euler is strongly associated with e and many of its applications and properties.
81What is the Fibonacci sequence?
Mathematical Concepts
Answer: A sequence in which each term is generally the sum of the two preceding terms, beginning 0, 1, 1, 2, 3, 5…
82What is the golden ratio approximately equal to?
Mathematical Concepts
Answer: Approximately 1.618.
83What is a prime number?
Mathematical Concepts
Answer: A whole number greater than 1 with exactly two positive divisors: 1 and itself.
84What is an irrational number?
Mathematical Concepts
Answer: A real number that cannot be expressed as a ratio of two integers.
85What is a rational number?
Mathematical Concepts
Answer: A number that can be expressed as a ratio of two integers with a nonzero denominator.
86What is zero?
Mathematical Concepts
Answer: An integer representing no quantity; it also serves as the additive identity.
87What is infinity in mathematics?
Mathematical Concepts
Answer: A concept describing something unbounded or without end; it is not an ordinary real number.
88What is a mathematical constant?
Mathematical Concepts
Answer: A fixed value that does not change, such as π or e.
89What is an algorithm?
Mathematical Concepts
Answer: A finite, well-defined sequence of steps for solving a problem or performing a computation.
90What is a mathematical proof?
Mathematical Concepts
Answer: A logical argument demonstrating that a mathematical statement follows from accepted premises, definitions and established results.
91What is a set in mathematics?
Mathematical Concepts
Answer: A well-defined collection of objects.
92What is a function?
Mathematical Concepts
Answer: A relation that assigns each input in its domain exactly one output.
93What is a vector?
Mathematical Concepts
Answer: A mathematical object that has both magnitude and direction.
94What is a matrix?
Mathematical Concepts
Answer: A rectangular arrangement of numbers or other mathematical objects in rows and columns.
95What is calculus mainly concerned with?
Mathematical Concepts
Answer: Change, rates of change, accumulation and related concepts.
96What does differential calculus study?
Mathematical Concepts
Answer: Rates of change and derivatives.
97What does integral calculus study?
Mathematical Concepts
Answer: Accumulation, areas, volumes and integrals.
98What is trigonometry concerned with?
Mathematical Concepts
Answer: Relationships between angles and sides of triangles and related periodic functions.
99What is the Pythagorean theorem?
Mathematical Concepts
Answer: For a right triangle, a² + b² = c², where c is the hypotenuse.
100What is the mathematical name for the study of shapes, sizes and properties of space?
Mathematical Concepts
Answer: Geometry.
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