Class 9 Mathematics Quiz

In between any two numbers, there are:

Which of the following is an irrational number?

If a polynomial has all its coefficients as integers and its highest common factor is 1, it is called:

The diagonals of a parallelogram ABCD intersect at O. If ∠DAC = 32°, ∠AOB = 70°, then what is the value of ∠DBC?

In the figure given below, line RT has been drawn parallel to SQ. If ∠PQS = 40°, ∠QPS = 100°, ∠PSR = 85° and ∠QRS = 70°, then ∠QRT is equal to:

If the graph of a linear equation is a straight line, how many solutions does it have?

Which of the following pairs of linear equations is consistent and dependent?

Which of the following is NOT a postulate in Euclid's Geometry?

What is the probability of a spinner landing on a multiple of 3 if it is divided into 8 equal sections?

If the probability of rain on any given day is 30%, what is the probability of it not raining for two consecutive days?

Mathematics Quiz Overview

Total marks: 100
Duration: 90 minutes
Number of questions: 15

Rational and Irrational Numbers

There are infinite rational numbers between any two numbers.
Example of an irrational number: √23 (not a perfect square).
Other examples of irrational numbers include √12/√3 and √7.

Polynomials

A polynomial with all integer coefficients and a highest common factor of 1 is called an irreducible polynomial.
Types of polynomials include monomial and cubic polynomial.

Geometry of Parallelograms

In a parallelogram ABCD, the diagonals intersect at point O.
If ∠DAC = 32° and ∠AOB = 70°, find the measure of ∠DBC.

Geometry Angles

Given a parallel line RT to SQ, various angles can be calculated.
For instance, known angles ∠PQS = 40°, ∠QPS = 100°, ∠PSR = 85°, and ∠QRS = 70° can help find ∠QRT.

Solutions of Linear Equations

A linear equation with a straight line graph has infinite solutions, one solution, or no solution depending on its relationship with other lines.
Consistent and dependent pairs of linear equations can be identified; e.g., 2x + 3y = 7 and 4x + 6y = 14.

Euclidean Geometry

A key postulate is that two points determine a unique line.
Right angles are congruent, and specific conditions relate to lines and planes.

Probability Concepts

A spinner divided into 8 equal sections has specific probabilities for landing on multiples of a number.
The probability of rain on a given day, when at 30%, translates to a different probability for consecutive days without rain, requiring calculations based on independence of events.

Test your knowledge of mathematics with this Class 9 quiz featuring 15 questions. Covering various topics, the quiz challenges your understanding of numbers and their properties. Perfect for students preparing for their exams!