HARD
Earn 100

Find all pairs of positive integers whose sum is and H.C.F is . Show your work.
Important Questions on Less Common Multiple and Highest Common Factor
EASY
Find the greatest number which will exactly divide and .

MEDIUM
The largest number which divides and leaving remainders and respectively is

EASY
The Euclidean algorithm is used to calculate the _____.

MEDIUM
The product of two numbers is and their HCF is . If the sum of the squares of the two numbers is , then what is the mean of the two numbers?

EASY
If denotes H.C.F. of and and denotes L.C.M. of and , then the value of is:

HARD
If is the HCF of and where then what is the value of ?

MEDIUM
If the HCF of polynomials and is then what are the values of and respectively?

EASY
The LCM and HCF of two numbers are and respectively. If one of the numbers is then what is the second number?

EASY
What is the Highest common factor of and ?

EASY
What is the of smallest prime number and the smallest composite number ?

MEDIUM
What is the HCF of and ?

EASY
A, B, C have and marbles, respectively. They decide to divide these marbles in parts such that all parts have the same number of marbles. Also, they cannot give or take the marbles. Find the minimum possible number of parts that can be made.

EASY
What is the Lowest Common Multiple of and ?

EASY
Three numbers are in the ratio and their HCF is . The numbers are_____.

EASY
Which of the following is true?

EASY
At a telephone exchange, three phones ring at intervals of sec, sec, and sec. If they ring together at am, when will they next ring together?

MEDIUM
Find the number lying between and , which when divided by and leaves in each case a reminder .

EASY
Find the HCF of 3, 7 and 15.
(A) 7
(B) 15
(C) 3
(D) 1

EASY
What will be the Highest Common Factor of and

