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Lesson Posted on 28/09/2018 CBSE/Class 9/Mathematics/Unit I: Number systems

Deepa Thakur Sharma

I have always loved teaching and would give personal attention to each student and do not mind repeating...

NUMBER A mathematical symbol represented by a set of digits is called a number.we can express a number in two, i.e., in words & in figures.e.g., if a number is 3290, then we can write this number in words as 'three thousand two hundred and ninety.' DECIMAL SYSTEM In our daily life, we use numbers... read more

NUMBER

A mathematical symbol represented by a set of digits is called a number.we can express a number in two, i.e., in words & in figures.e.g., if a number is 3290, then we can write this number in words as 'three thousand two hundred and ninety.'

DECIMAL SYSTEM

In our daily life, we use numbers everywhere for counting, for measuring weight, for measuring height, for scores of games etc. In the decimal system, we use ten symbols 0,1,2,3,4 5,6,7,8 and 9 which are called digits. Here, 0 is called the insignificant number, and the rest digits are called significant digit.

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Lesson Posted on 24/09/2018 CBSE/Class 9/Mathematics/Unit I: Number systems/Real Numbers

Kanika

Taught class 9-10 maths and science in coaching centre and giving home tuition to classes 6-8 for all...

--------------To find four rational numbers between 3 and 5 Solution: As we have to find four rational numbers between 2 nos then add 4+1 in the denominator 3*5/1*5= 15/5 5*5/1*5=25/5 So we can write any four numbers between 15/5 and 25/5 16/5, 17/5, 18/5, 19/5 Problem2) To find five rational... read more

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To find four rational numbers between 3 and 5

Solution: As we have to find four rational numbers between 2 nos then add 4+1 in the denominator

3*5/1*5= 15/5

5*5/1*5=25/5

So we can write any four numbers between 15/5 and 25/5

16/5, 17/5, 18/5, 19/5

Problem2) To find five rational numbers between 5/7 and 6/7

Solution: As both have the same denominator so we can divide and multiply both the numbers by 10

5*10/7*10= 50/70

6*10/7*10=60/70

Therefore five rational numbers are 51/70, 52/70, 53/70, 54/70, 55/70

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Lesson Posted on 24/09/2018 CBSE/Class 10/Mathematics CBSE/Class 9/Mathematics/Unit I: Number systems/Real Numbers

Kanika

Taught class 9-10 maths and science in coaching centre and giving home tuition to classes 6-8 for all...

there are different types of numbers 1) Whole Number: the numbers which start from 0 eg, 0,1,2,3,..... Upto infinity . They are denoted by W. They are positive number 2) Natural Number: The numbers which start from 1 i.e. 1,2,3...... Upto infinity. They are denoted by N. They also include only positive... read more

there are different types of numbers

1) Whole Number: the numbers which start from 0 eg,  0,1,2,3,..... Upto infinity . They are denoted by W. They are positive number

2) Natural Number: The numbers which start from 1 i.e. 1,2,3...... Upto infinity. They are denoted by N. They also include only  positive number

3) Integers: It contains positive and negative numbers both,  also include zero. Eg,  -1,-26,0,5,45,etc. They are denoted by Z

4) Rational Number: Number which can be written in p/q form where p and q both are integers and q should not be equal to zero.

Eg,   -3 yes it is a rational  number because it can be written in p/q form as -3/1

They are denoted by Q

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Lesson Posted on 24/09/2018 CBSE/Class 9/Mathematics/Unit I: Number systems CBSE/Class 9/Mathematics

Kanika

Taught class 9-10 maths and science in coaching centre and giving home tuition to classes 6-8 for all...

Whole number can not be a Natural Number because whole number starts from 0 while Natural number starts from 1 which des not includes zero as it not include zero so it can not be a whole number. Natural number can be a whole number because Natural number starts from 1 and whole number starts from 0... read more

Whole number can not be a Natural Number because whole number starts from 0 while Natural number starts from 1 which des not includes zero as it not include zero so it can not be a whole number.

Natural number can be a whole number because Natural number starts from 1 and whole number starts from 0 which includes 1

Natural no: 1,2,3,4,5,.....

Whole no: 0,1,2,3,4,5,......

The bold numbers which are presented in the whole number are nothing but the natural numbers except 0

Therefore these 1,2,3,4,5,.... are the natural numbers which are coming in the whole numbers

Integer can be a Rational number because every integer can Be expresses as p/q form eg: 3 is integer can be expressed as 3/1

-4 is an integer and can be written as -4/1 where p is -4 and q is 1

Rational number can not be an Integer because 2/5 is not an integer but it is a rational number as p is 2 and q is 5 but we know that integer does not have p/q form.

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Lesson Posted on 17/09/2018 CBSE/Class 9/Mathematics/Unit 2-Algebra/Linear equations in 2 variables

Tapas Dey

I am an experienced, qualified tutor with 1 year of experience in teaching Maths and Science, in State...

Check Which of the following are solutions of the equation x-2y=4 and which are not. i. (0,2) ii. (2,0) iii. (4,0) iv. (1,1) Ans: i). (0,2) Putting x=0, and y= 2 in the L.H.S of the give equation, x-2y=0-2*2=-4 ≠4 L.H.S≠R.H.S Therefore, (0,2) is not a solution of this equation. ii. (2,0) Putting... read more

Check Which of the following are solutions of the equation x-2y=4 and which are not.

i. (0,2) ii. (2,0) iii. (4,0) iv. (1,1)

Ans:

i). (0,2)

Putting x=0, and y= 2 in the L.H.S of the give equation,

x-2y=0-2*2=-4 ≠4

L.H.S≠R.H.S

Therefore, (0,2) is not a solution of this equation.

ii. (2,0)

Putting x=2, and y= 0 in the L.H.S of the give equation,

x-2y=2-2*0=2 ≠4

L.H.S≠R.H.S

Therefore, (2,0) is not a solution of this equation.

iii. (4,0)

Putting x=4, and y= 0 in the L.H.S of the give equation,

x-2y=4-2*0=4 =4

L.H.S=R.H.S

Therefore, (4,0) is a solution of this equation.

iv. (1,1)

Putting x=1, and y= 1 in the L.H.S of the give equation,

x-2y=1-2*1=-1≠4

L.H.S≠R.H.S

Therefore, (1,1) is not a solution of this equation.

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Answered on 21/10/2018 CBSE/Class 10 CBSE/Class 9/Mathematics

Chandan Kumar

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3000 per month
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Answered on 13/08/2018 CBSE/Class 10 CBSE/Class 9/Mathematics

KalaiRaj

350 / hour 5000 -6000 per month
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Answered on 05/08/2018 CBSE/Class 9/Mathematics CBSE/Class 10/Mathematics/UNIT II: Algebra/Polynomials

Camellia Ray

Tutor

A very good thought Moumita. See different boards and different school have different criteria, plan accordingly. 1st of all keep few things in mind *To motivate and encourage the students, many students have fear in the subject so teach in such a way so that they are able to overcome their fears.... read more

A very good thought Moumita. See different boards and different school have different criteria, plan accordingly.

1st of all keep few things in mind

*To motivate and encourage the students, many students have fear in the subject so teach in such a way so that they are able to overcome their fears.

*Never scold them because if they ate scared they will never ask the doubts.

*Follow reference books like for cbse R.D.SHARMA&R.S.AGGARWAL etc.

* Motivate them to give olympiad exam.

*Make different set of question papers and take test once the chapter is finished.

*Discuss their monthly performance with parents.

All the best.

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Answered on 04/08/2018 CBSE/Class 9/Mathematics CBSE/Class 11

I want to teach to class 9&10

Ravi Ranjan S.

Tutor

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Answered on 11/01/2018 CBSE/Class 9/Mathematics Tuition/Class IX-X Tuition

D Mukherjee

Teacher

In total there are 5 children out of which 3 are girls So the probability of selecting a girl is 3/5 or 0.6 or 60 %
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