Fill in the following sentences with suitable words from the given list.
Constitution, Discrimination, Disharmony, Eight, Equality, Fundamental, Prejudices, Secular, Stereotype, Untouchability
1. ________ means to judge other people negatively or see them as inferior.
2. When we fix people into one image we create a ___________.
Multiple Choice Based Questions
Q1: Who is the author of 'The Adventures of Toto'?
(a) Evelyn Glennie
(b) Ruskin Bond
(c) R. K. Laxman
(d) O. Henry
Q1: Name the mathematician, was the first person to introduce the concept of a matrix? Define matrix.
Answer: Arthur Cayley in 1857
A matrix is an ordered rectangular array of numbers or functions. The numbers or functions are called the elements or the entries of the matrix.
Q2: Give examples of domains where matrices based applications are widely used.
Answer: Matrices is one of the most important and powerful tools in mathematics which has found its way into various disciplines like Engineering, Economics, Statistics, Physics, Chemistry, Commerce etc.
Complete the following statements with suitable word(s).
1. Probability of an event E + Probability of the event ‘not E’ = _______ .
2. The probability of an event that cannot happen is ________ . Such an event is called ___________ .
3. The probability of an event that is certain to happen is ________ . Such an event is called ___________ .
Q1: The word ‘Economics’ originates from the ________ world ‘Oikonomia’
(a) Roman
(b) French
(c) Greek
(d) European
Q2: In Business economics ‘ends’ refers to-
(a) Human wants
(b) Resources
(c) Both (a) and (b)
(d) none of these
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| Image Credits: Tomáš Kebert & umimeto.org (wikimedia) |
Fill in the blanks with suitable words.
1. Soil is formed by the breaking down of rocks, by the action of wind, water and climate, called __________.
2. The removal of land surface by water, wind or ice is known as ________.
3. ________ soil having organic matter and a good capacity to retain water are ideal sources for growing paddy.
Fill in the blanks with suitable word(s).
1. Numbers having more than two factors are called _____________ numbers.
2. A _______ of a number is an exact divisor of that number.
3. ______ is a factor of every number.
Cube root is the inverse operation of a cube.
Symbol ∛ represents a cube-root.
e.g. $\sqrt[3]{8} = 2$,
$\sqrt[3]{216} = 6$
METHODS OF FINDING CUBE ROOT
There are two methods of finding Cube Root
1. Prime Factorisation
2. Estimation Method
Q1: Which of the following statements is wrong for viroids?
(a) They cause infections.
(b) Their RNA is of high molecular weight.
(c) They lack a protein coat.
(d) They are smaller than viruses.
Class 9 Maths - Important Identities
(a+b)² = a² + 2ab+ b²
(a–b)² = a² –2ab + b²
a² – b² = (a+b)(a–b)
