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Prabhu

Sep 16, 2013



Mehnaaz

Nov 12, 2014



Harjee

May 17, 2014

#### 923*985 DIVISIBLE BY 11 FIND THE MISSING DIGIT



Solution:
Let the missing digit in the given number = n
By the divisibility rule of 11
If the difference of the sum of digits at odd places is eq...

Surinder Kumar

Sep 30, 2015



Mehnaaz

Nov 12, 2014

#### In a morning walk, 3 persons step off together. Their steps measure 80 cm, 85 cm and 90 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?



Minimum distance that each should walk = LCM of 80, 85 and 90.
80 = 2 x 2 x 2 x 2 x 5
85 = 17 x 5
90 = 2 x 3 x 3 x 5
LCM = 2 x 2 x 2 x 2 x 3 x 3 x 5...

Vaibhav Choudhary

Aug 7, 2013

#### Write the smallest 4 digit number and express it in terms of prime factors.



The smallest four digit niumber 1000
1000= 23X53    &#...

Shashank

Oct 2, 2015

#### HCF OF 15 AND 25



HCF of 15 and 25 is 5

Jitendriya Dash

Mar 28, 2016

#### what are co-prime numbers?



Co-prime numbers are the  set of numbers which have only 1 as their common factor i.e their HCF is 1. Co-prime numbers are also known as relatively prime or mutually prime num...

Syed Burhanuddin

May 21, 2015



Perfect number:

Manmeet Kaur

May 11, 2015

#### Simplify: 45 + 3{34 - 18 - 14} / 3{17 + 3 of 4 - (2 of 7)}



45 + 3{34 - 18 - 14} / 3{17 + 3 of 4 - (2 of 7)}

= 45 + 3{2} / 3{17 + 3 of 4 - 14}

= 45+6   / 3{17 + 12 - 14}

= 51 / 3{29 - 14}

= 51 / 3{15}...

Prabhu

Sep 16, 2013



Mehnaaz

Nov 12, 2014



Harjee

May 17, 2014

#### 923*985 DIVISIBLE BY 11 FIND THE MISSING DIGIT



Solution:
Let the missing digit in the given number = n
By the divisibility rule of 11
If the difference of the sum of digits at odd places is eq...

Surinder Kumar

Sep 30, 2015



Mehnaaz

Nov 12, 2014

#### In a morning walk, 3 persons step off together. Their steps measure 80 cm, 85 cm and 90 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?



Minimum distance that each should walk = LCM of 80, 85 and 90.
80 = 2 x 2 x 2 x 2 x 5
85 = 17 x 5
90 = 2 x 3 x 3 x 5
LCM = 2 x 2 x 2 x 2 x 3 x 3 x 5...

Vaibhav Choudhary

Aug 7, 2013

#### Write the smallest 4 digit number and express it in terms of prime factors.



The smallest four digit niumber 1000
1000= 23X53    &#...

Shashank

Oct 2, 2015

#### HCF OF 15 AND 25



HCF of 15 and 25 is 5

Jitendriya Dash

Mar 28, 2016

#### what are co-prime numbers?



Co-prime numbers are the  set of numbers which have only 1 as their common factor i.e their HCF is 1. Co-prime numbers are also known as relatively prime or mutually prime num...

Syed Burhanuddin

May 21, 2015



Perfect number:

Manmeet Kaur

May 11, 2015

#### Simplify: 45 + 3{34 - 18 - 14} / 3{17 + 3 of 4 - (2 of 7)}



45 + 3{34 - 18 - 14} / 3{17 + 3 of 4 - (2 of 7)}

= 45 + 3{2} / 3{17 + 3 of 4 - 14}

= 45+6   / 3{17 + 12 - 14}

= 51 / 3{29 - 14}

= 51 / 3{15}...

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