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Sep 16, 2013

A traffic light at three different road crossing change after every 48 seconds,72 seconds and 108 seconds respectively. If they change simultaneously at 7.00 a.m at what time will they change simultaneously again.?

This answer has an image. Please click on the question to read more.

Mehnaaz

Nov 12, 2014

Find the smallest 4 digit number which is divisible by 18, 24, 32.

This answer has an image. Please click on the question to read more.

Harjee

May 17, 2014

923*985 DIVISIBLE BY 11 FIND THE MISSING DIGIT

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

3 digit smallest number which is divisible by 6,8 and 12

This answer has an image. Please click on the question to read more.

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?

Answer.

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

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.

Answer.

The smallest four digit niumber 1000

1000= 2^{3}X5^{3} &#...

The smallest four digit niumber 1000

1000= 2

Shashank

Oct 2, 2015

HCF OF 15 AND 25

Answer.

HCF of 15 and 25 is 5

HCF of 15 and 25 is 5

Jitendriya Dash

Mar 28, 2016

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

How many perfect numbers between 1 to 100?

**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}...

= 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

A traffic light at three different road crossing change after every 48 seconds,72 seconds and 108 seconds respectively. If they change simultaneously at 7.00 a.m at what time will they change simultaneously again.?

This answer has an image. Please click on the question to read more.

Mehnaaz

Nov 12, 2014

Find the smallest 4 digit number which is divisible by 18, 24, 32.

This answer has an image. Please click on the question to read more.

Harjee

May 17, 2014

923*985 DIVISIBLE BY 11 FIND THE MISSING DIGIT

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

3 digit smallest number which is divisible by 6,8 and 12

This answer has an image. Please click on the question to read more.

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?

Answer.

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

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.

Answer.

The smallest four digit niumber 1000

1000= 2^{3}X5^{3} &#...

The smallest four digit niumber 1000

1000= 2

Shashank

Oct 2, 2015

HCF OF 15 AND 25

Answer.

HCF of 15 and 25 is 5

HCF of 15 and 25 is 5

Jitendriya Dash

Mar 28, 2016

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

How many perfect numbers between 1 to 100?

**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}...

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

= 45+6 / 3{17 + 12 - 14}

= 51 / 3{29 - 14}

= 51 / 3{15}...