Tag: history of mathematics

Questions Related to history of mathematics

Find the square of the number $125$ using Vedic Mathematics.

  1. $15625$

  2. $15525$

  3. $15325$

  4. None of these


Correct Option: A
Explanation:

Next number of 12 is 13 .

12 × 13 = 156
square of 5 = 25
So, square of 125 = 15625

Find the square of $925$ using Vedic Mathematics.

  1. $845625$

  2. $855225$

  3. $855625$

  4. None of these


Correct Option: C
Explanation:

Next number of 92 is 93
Square of 925 = (92 × 93)25 = 855625

Square of 659 by Sutra Ekadhikena Purvena is?

  1. 21456

  2. 434281

  3. 412356

  4. 52789


Correct Option: B
Explanation:

(659)2
= (659 + 1) (659 – 1) + 12
= 660 × 658 + 1
= 434280 + 1
= 434281

Identify the correct representation in the square of $925$ using Vedic Mathematics.

  1. $(95\times 95)\ | \ 125$

  2. $(95\times 9)\ |\ 625$

  3. $(95\times 96)\ | \ 125$

  4. None of these


Correct Option: B
Explanation:

Next number of 92 is 93
Square of 925 = (92 × 93)25 = 855625 = (95×9)|625

Square of 89 by Sutra Ekadhikena Purvena is?

  1. 4288

  2. 2166

  3. 7921

  4. 3356


Correct Option: C
Explanation:

(89)2
= (89 + 1) (89 – 1) + 12
= 90× 88 + 1
= 7920 + 1
= 7921

Square of 38 by  Upsutra Yavadunam Tavadunam Vargecha Yojayet is?

  1. 7854

  2. 1444

  3. 5634

  4. 8764


Correct Option: B

Find the square of the number $95$ using Vedic Mathematics.

  1. $9025$

  2. $9125$

  3. $8025$

  4. $8125$


Correct Option: A
Explanation:
To find $(95)^{2}$
$100$ is the nearest power of $10$ which can be taken out as base.
Deviation is obtained by $95-100=-5$
Left side of the number is $95-5=90$
Since, the base is $100$, the right hand side number will have two digits and that can be obtained by taking square of deviation $-5$. So, $(-5)^{2}=25$.
Thus, the right side number will be $25$.
Hence, the required number is $9025$.

Find the square of the number $105$ using Vedic Mathematics.

  1. $11125$

  2. $11235$

  3. $11325$

  4. $11025$


Correct Option: D
Explanation:
To find $(105)^{2}$
$100$ is the nearest power of $10$ which can be taken out as base.
Deviation is obtained by $105-100=5$
Left side of the number is $105+5=110$
Since, the base is $100$, the right hand side number will have two digits and that can be obtained by taking square of deviation $5$. So, $(5)^{2}=25$.
Thus, the right side number will be $25$.
Hence, the required number is $11025$.

Identify the correct representation of the square of the number $95$ using Vedic Mathematics.

  1. $(95 \times 10)5$

  2. $(9 \times 9)25$

  3. $(9 \times 10)125$

  4. $(9 \times 10)25$


Correct Option: D
Explanation:


$\underset { +5 }{ 95 }  \times \underset { +5 }{  95 } $                                                          Using base 10
                                                                       $9 = 9 \times  base$
Mutiply $5$ with $5 = 25$

Add $5$ to $95 = 100$

Multiply 9 to sum  $= 9\times 100 = 900$

 Take first 2 digits $= 90 = 9\times 10$
 
Last 2 digits $= 25$

$\therefore $   ${95 }^{ 2 } = (9\times 10)25$

When multiplied by itself, which number is equal to $12,345, 678, 987, 654, 321$?

  1. $1,111,111$

  2. $111,111,111$

  3. $11,111,111,111$

  4. $111,111,111,111$


Correct Option: B
Explanation:
$(1)^2=1$
$(11)^2=121$
$(111)^2=12321$
$(111, 111, 111)^2=12345678987654321$
Here we can show a pattern for each count of $1$ in $LHS$ is extended the number from $1$ to that Number and reverse that number to the $1$ in $RHS$