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gcd

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Baseball Cards 2017-04-20
From Raquel:
A minor league baseball team gave away baseball cards to each person entering the stadium. One group receives 28 baseball cards. A second group received 68 baseball card. If each person entering the stadium receive the same number of cards, what was the greatest possible number of baseball cards that each person could have received?
Answered by Penny Nom.
The greatest common divider of n^2-3n-1 and 3 2014-03-09
From Rimoshika:
determine the greatest common divider (n^2-3n-1,3)
Answered by Penny Nom.
GCD 2013-05-20
From Julia:
Prove that if a and b are coprime integers, the greatest common divisor of a + b and a - b is either 1 or 2.
Answered by Penny Nom.
HCF and LCM 2013-05-15
From Kelly:
If HCF and LCM of two numbers is 7 and 20 respectively, then the number/s is/are….
Answered by Penny Nom.
GCD (a + b, a - b). 2009-04-01
From Tomas:
Let a and b integer and relatively prime. Prove that:
GCD (a + b , a - b) = 1 or 2

Answered by Stephen La Rocque.
The product of two integers their LCM and their HCF 2009-02-15
From Anonymous:
Two numbers have LCM = 60. If their product is 180, what is their HCF?
Answered by Harley Weston.
LCM and GCD 2008-05-22
From kasirao:
Please help me in knowing the proof for the equality, "The product of two natural numbers is equal to their LCM and GCD"
Answered by Penny Nom.
GCF and LCD 2008-01-17
From Peter:
I need to know the differences between GCF and LCD.
Answered by Penny Nom.
The realtionship between lcm and gcd 2007-10-27
From Brenda:
why does multiplying lcm of (n,s) by gcd (n,s) give n times s. when (n,s) are any two numbers?
Answered by Penny Nom.
Students in rows 2007-05-17
From Ashi:
the student of three classescan be made to stand into rows having same number of students. there are 24,36 and 60 students in the classes. how many maximum number of student will stand in each row.
Answered by Stephen La Rocque.
The greatest common factor 2006-10-17
From Myrna:
What is the greatest common factor of 49,164 and 80,860
Answered by Stephen La Rocque.
GCD 2006-03-20
From Jana:
How can i prove: if gcd(a,b)=1 then gcd(a+b,ab)=1
Answered by Penny Nom.
GCD and LCM 2004-10-31
From Cartalina:
how do you calculate the "positive difference between the GCF and LCM of two numbers"?
Answered by Penny Nom.
GCD (a + b , a^2 - ab + b^2) 2004-08-27
From Carol:
Let a and b integer and relatively prime. Proof that:
GCD (a + b , a^2 - ab + b^2) = 1 or 3

Answered by Penny Nom.
Greatest Common Factor 2003-11-08
From Beth:
How do you use the Greatest Common Factor in addtion and subtraction of fraction?
Answered by Penny Nom.
The HCF and LCM of polynomials 2003-05-20
From Charanpal:

Question:
Find the HCF and LCM of the polynomials given below. Verify that he productof these HCF and LCM differs from the product of the polynomials, if at all, by a factor of -1

  1. 1-x2 and x3 -1
  2. 1 - x2 and x4 - 1

Answered by Penny Nom.
Some 5th grade problems 2003-01-24
From Sabrina:

[What is the greatest common factor of 20,28, and 36?] next problem is

[5k+7(k+8)= ] next problem

[Curtis simplified 0.8 divided by 0.2 x 0.04 and got 10. Latoya Simplified and got 1.6. is either correct? Can you explaine how you got the answer please.]


Answered by Penny Nom.
Reduce 79,537/3,623,420 2001-12-13
From Eliana:
How do you reduce 79,537/3,623,420.
Answered by Claude Tardif.
GCD and LCM 2001-09-24
From David:
Find the GCD adn LCM of the following numbers. Assume p 2 to the power p, 3 to power q, 5 to power r

and

2 to power q, 3 to power r, 7 to power p


Answered by Penny Nom.
Greatest Common Factor 2001-05-09
From Nicole:
What is the Greatest Common Facter for:

126,261
1008,1080
546,1995
128,256
and
255,256

Answered by Penny Nom.
Greatest common factor 2001-01-17
From A teacher:
I'm a teacher at a local Middle School and I would like the answers for the following questions.

What is the greatest common factor for..

546 and 780

156 and 732

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Answered by Leeanne Boehm and Penny Nom.
A pair of numbers whose GCF is 28 2000-12-27
From John:
Name 2 different pairs of numbers whose GCF is 28.
Answered by Penny Nom.
Greatest Common Factor. 1998-01-09
From Percy Stribling:
how do you figure out what the greater common factor is?
Answered by Penny Nom.
quel sont les plus grands diviseurs communs? 2005-09-07
From Sylvain:
quel sont les plus grands diviseurs communs?
Answered by Claude Tardif.
 
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