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Real Numbers Free Doubts and Solutions

CBSE - IX - Mathematics - Number System

1)State whether the following statements are true or false. Give reasons for your answer. (a)Every rational number is a whole number

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CBSE - IX - Mathematics - Number System

Are fractions real numbers

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CBSE - IX - Mathematics - Number System

1. What is a nonzero? 2. What is a nonzero even numbers? 3. what is a nonzero multiple of 3?

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CBSE - IX - Mathematics - Number System

A circular field has a circumference of 360 km. Three cyclist starttogether and can cycle 48 60 and 72 km a day round the field. when will they meet again?


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CBSE - IX - Mathematics - Number System

Q) The value of square root of 9 plus 6 square root of 2 end root space plus space square root of 9 minus 6 square root of 2 end root is
A) 3 
B) 6
C) 2 square root of 3
D) 2 square root of 6

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CBSE - IX - Mathematics - Number System

I wanted to know why the rationalising factor of the equation begin inline style fraction numerator 5 plus 2 square root of 3 over denominator 5 minus 2 square root of 3 end fraction end style is 5 plus 2 square root of 3, instead of 5 minus 2 square root of 3. This equation was in one of the video lessons, and I am a bit confused why addition is being used in the rationalising factor. Can I use 5 minus 2 square root of 3as the rationalising factor?

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CBSE - IX - Mathematics - Number System

You know that 1/7 = I.142857 bar. Can you predict what the decimal expansions of 2/7, 3/7, 4/7, 5/7, 6/7 are, without actually doing the long division? If so, HOWAND WHY?

Asked by Shashi Bushan 10th March 2017, 6:58 PM
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CBSE - IX - Mathematics - Number System

can you please tell me how we get  (3+square root of blank end root3)(3-square root of blank end root3)= 9-3=6 using the given identity??
(a+square root of blank end rootb)(a-square root of blank end rootb)=a^2-b

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CBSE - IX - Mathematics - Number System

What decimal of an hour is a second?

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CBSE - IX - Mathematics - Number System

how to convert a recurring rational number in the form of p/q. plz write its steps with an example.
 

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CBSE - IX - Mathematics - Number System

Select three distinct digits. Form a three digit number. Form the other number by reversing the digits. Find the difference of these two numbers. What is the GCD of all such differences? Please give step-by-step detailed answer.

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CBSE - IX - Mathematics - Number System

represent 2-root 3 on number line

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CBSE - IX - Mathematics - Number System

Q. The question is of book R.D.SHARMA...............................
Exercise 2.1 question is the first question of question number 3....

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CBSE - IX - Mathematics - Number System

Simplified value of is:

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CBSE - IX - Mathematics - Number System

1 divided by 2 minus square root of 3 space f i n d space t h e space v a l u e space o f space x cubed minus 2 x squared minus 7 x plus 5

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CBSE - IX - Mathematics - Number System

1. If  2power x+5 X 3 power 2x-9 =3022 find value of x ?
 
 
2. x= square root of blank end root3+square root of blank end root2divided bysquare root of blank end root3+square root of blank end root2 and y= square root of blank end root3-square root of blank end root2divided bysquare root of blank end root3+square root of blank end root2 find x2 + y2-xy

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CBSE - IX - Mathematics - Number System

square root of 125 divided by square root of 5

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CBSE - IX - Mathematics - Number System

Simplify:

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CBSE - IX - Mathematics - Number System

If x = 3 + then

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CBSE - IX - Mathematics - Number System

Simplify:

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CBSE - IX - Mathematics - Number System

If x = find the value of x2 + xy + y2.

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CBSE - IX - Mathematics - Number System

If x = 3+2, check whether is rational or irrational.

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CBSE - IX - Mathematics - Number System

If , find the value of .

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CBSE - IX - Mathematics - Number System

Simplify the following by rationalizing the denominators:

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CBSE - IX - Mathematics - Number System

Simplify the following by rationalizing the denominator.

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CBSE - IX - Mathematics - Number System

Simplify : .

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

Simplify the following by rationalizing the denominators.

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CBSE - IX - Mathematics - Number System

Express with rational denominator.

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CBSE - IX - Mathematics - Number System

Simplify the following into a fraction with rational denominator.

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CBSE - IX - Mathematics - Number System

Express with rational denominator.

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CBSE - IX - Mathematics - Number System

Find the value of a and b if = a - b.

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CBSE - IX - Mathematics - Number System

Simplify the following:

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CBSE - IX - Mathematics - Number System

Simplify:

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CBSE - IX - Mathematics - Number System

If x = 5 - 2 then find the value of x2 + .

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CBSE - IX - Mathematics - Number System

If x = and y = then find the value of x + y.

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CBSE - IX - Mathematics - Number System

Simplify :

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CBSE - IX - Mathematics - Number System

Express in the form of where p and q are integers and q 0.

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CBSE - IX - Mathematics - Number System

Evaluate : , given that = 3.162.

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

If both a and b are rational numbers, find a and b for the following:

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

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CBSE - IX - Mathematics - Number System

If  x = √3+1/2, then the value of 4x3+ 2x2 – 8x + 7 will be what?   

(a)10

(b)8

(c)6

(d)4

Asked by Archeet 2nd June 2014, 8:35 PM
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CBSE - IX - Mathematics - Number System

If x = √3+1 /2, then the value of x2  + 1/x2 and x2  –  1/x2

Asked by Archeet 2nd June 2014, 9:59 AM
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CBSE - IX - Mathematics - Number System

Q.Prove that: √((3×5^(-3) ) )÷?(3^(-1) )  √5  ×√(6&3×5^6 )  =3/5

Asked by Shreshth Sahu 24th May 2014, 7:53 AM
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CBSE - IX - Mathematics - Number System

Q.1.If 2m+n divided by 2n-m = 16 and a = 21/10 , then a2m+n-p divided by (am-2n+2p )-1 =

       

Asked by Shreshth Sahu 23rd May 2014, 7:48 PM
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CBSE - IX - Mathematics - Number System

what is the actual meaning of real numbers? how do they differ from whole numbers and rational numbers? please explain.

Asked by Arkajyoti Banerjee 19th May 2014, 11:39 PM
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CBSE - IX - Mathematics - Number System

Simplify the following by rationalizing the denominator. .

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CBSE - IX - Mathematics - Number System

Asked by Topperlearning User 29th April 2013, 2:49 AM
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CBSE - IX - Mathematics - Number System

what is real no.

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