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Agam answered 1 year(s) , 8 month(s) ago

Give exmple of two irrational numbers whose sum is rational

1) (2 + √3) + (2 − √3) = 4
2) (2 + √3) × (2 − √3) = 2 2 − (√3) 2= 4 − 3 = 1
3)  (√5/√5) = 1

Aug 2

• 7 Likes
• 48532 Views

Aug 2

Agam answered 1 year(s) , 8 month(s) ago

Arrange in ascending order: root 3, 3root 4, 4root 6

LCM of the denominators of exponents 2, 3 and 4 is 12

Hence the ascending order of the given numbers is

Sep 15

• 3 Likes
• 47536 Views

Sep 15

Jayanth commented 5 year(s) , 6 month(s) ago

If x=3-2√2 , find the value of √x+1/√x

Given x = 3 – 2√2
⇒ x = 2 + 1 – 2√2
⇒ x = (√2) 2 + 1 2 – 2 × √2 × 1
⇒ x = (√2 – 1 ) 2
∴ √x = (√2 – 1 )
Now consider, (1/√x) = 1/(√2 –...

Sep 25

• 5 Likes
• 41461 Views

Sep 25

Syeda answered 1 year(s) , 10 month(s) ago

represent root 17 on the number line

Sol :
We know that √16 = 4 and √17 = √(4 2 +1 2 )

mark point A representing 4 on number line .Now construct AB of unit length perpendicular to Oa .Then taking O...

Apr 26

• 4 Likes
• 39958 Views

Apr 26

Agam answered 1 year(s) , 8 month(s) ago

How to make square root spiral?

How to create a spiral of sequential square roots:
1) Construct an isosceles right triangle ABC with side 1 inch. (You can use the corner of an index card to make sure you are constructing a perfect ri...

Apr 13

• 0 Like
• 39810 Views

Apr 13

Kishore answered 4 year(s) ago

Find five rational number between 1and 2

The rational number between a and b is (a + b)/2
Hence rational number between 1 and 2 is (1+2)/2 = 3/2
Rational number between 1 and 3/2 is [1+(3/2)]/2 = 5/4
Rational number between 1 a...

Mar 28

• 2 Likes
• 37208 Views

Mar 28

Kishore answered 5 year(s) , 8 month(s) ago

If a = 7-4√3, find the value of √a+ 1/√a

Consider, a = 7 – 4√3
= 7 – 2×2×√3
= 4 + 3 – 2×2× √3
= 2 2 + (√3) 2 – 2×2× √3
a = (2 – √3) 2
∴ √a = 2 – √3

Hence [(...

Aug 2

• 8 Likes
• 35448 Views

Aug 2

Raghunath answered 4 year(s) , 8 month(s) ago

prove that root of 7 is irrational ?

Sol:
let us assume that √7 be rational.

then it must in the form of p / q  [q ≠ 0] [p and q are co-prime]

√7 = p / q

=> √7 x q = p

squarin...

Aug 12

• 4 Likes
• 34308 Views

Aug 12

Syeda answered 1 year(s) , 10 month(s) ago

Represent root 11 on the number line

Representation of √7 and √11 on the number line:

Consider the number shown here

Mark point A at 0 and B at 1. Consider BC  ⊥ AB such that BC = 1 unit

Complete the right angled triang

...

Asked by Ashwini kumar

Mar 28

• 4 Likes
• 31866 Views

Asked by Ashwini kumar

Mar 28

Kishore answered 5 year(s) , 8 month(s) ago

Rationalise the denominator

Consider,
Rationalize the denominator with its conjugate

Since the denominator is still an irrational number, rationalize once again with "√30"

Hence the denominator...

Aug 2

• 5 Likes
• 29471 Views

Aug 2

Madhumithaa answered 3 year(s) , 11 month(s) ago

Rational numbers between 3 and 4

rational numbers between 3 and 4 are
3 = 3/1* 7/7 = 21/7
4 = 4/1* 7/7 = 28/7
thus rational numbers between 3 (21/7) and 4 (28/7) are
22/7 , 23/7 , 24/7 , 25/7 , 26/7 , 27/7

Sep 25

• 5 Likes
• 29220 Views

Sep 25

Raghunath answered 4 year(s) , 9 month(s) ago

A positive integer n is divided by 9 gives 7 as the remainder , what will be the remainder when 3n-1 is divided by 9.

Sol:
Given A positive integer n is divided by 9 gives 7 as the remainder.
Let a be quotient
n = 9a+7
3n-1 is divided by 9
now, 3n-1= 3(9a+7)-1
=27a + 21-1...

Jun 25

• 1 Like
• 22392 Views

Jun 25

Agam answered 1 year(s) , 8 month(s) ago

Represent the square root 7 on number line

Representing √7 on the numberline is very easy and interesting, just follow the steps given below -:
1. Draw a numberline [locating only 0,1,2 & 3 is necessary].
...

May 25

• 0 Like
• 20578 Views

May 25

Agam answered 1 year(s) , 3 month(s) ago

Perpendicular are drawn on the sides of the equilateral triangle from any point within the triangle. If the lengths of these perpendiculars be 6cm ,7cm,and 9cm then the length of a side of the triang

Sol:

Let ∆ABC be an equilateral triangle.

Length of each side be ‘a’ cm.

O is a point in the interior of the triangle. OX⊥BC, OY⊥CA and OZ⊥AB
...

Jan 2

• 3 Likes
• 18500 Views

Jan 2

Kishore answered 5 year(s) , 7 month(s) ago

If a and b are rational numbers and 2+√3/2-√3=a+b√3

Given (2+√3)/(2 -√3) = a + b√3
Multiply and divide with (2 -√3)

On comparing both the sides, we get
a= 7 and b = 4

Sep 4

• 2 Likes
• 18298 Views

Sep 4

Suraj answered 5 year(s) , 3 month(s) ago

If 102y=25, then 10-y=?

Given 10 2y = 25
⇒ ( 10 y) 2  = 5 2
⇒ ( 10 y ) = 5
⇒ ( 10 y ) -1 = (5) -1
∴   10 ...

Dec 31

• 2 Likes
• 18060 Views

Dec 31

Padma answered 2 year(s) , 2 month(s) ago

you can use these numbers (1,3,5,7,9,11,13,15) you can also repeat this numbers.you will notice that only ias topper gourav agarwal can solve it. this question was asked in UPSC final exam held in december 2013 in india. pls answer it soon.

Using non-trick solutions;

1. There is no solution to this question using normal methods, as three odd numbers added together will always produce an odd number ( Is it p
...

Sep 28

• 1 Like
• 17895 Views

Sep 28

Kishore answered 5 year(s) , 8 month(s) ago

If 5x-3. 32x-8 = 225,then find the value of x.

5 x-3.  3 2x-8 = 225
= 3 × 75
= 3 × 3 × 25
= 3 × 3 × 5 × 5
∴ 5 x-3.  3 2x-8 =...

Aug 2

• 1 Like
• 16880 Views

Aug 2

Kishore answered 5 year(s) , 6 month(s) ago

Find two irrational numbers between 1/7 and 2/7.

(1/7) = 0.14285714 (nearly)
(2/7) = 0.28571428 (nearly)
Irrrational numbers between these two rational numbers are:
0.1505005000500005....
0.20200200020000....

Sep 21

• 0 Like
• 15911 Views

Sep 21

Kishore answered 5 year(s) , 7 month(s) ago

How to find the decimal expansion of √2 ?

Hence √2 = 1.4142 (nearly)

Aug 26

• 1 Like
• 15183 Views

Aug 26

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