MEDIUM
Earn 100

Find HCF of following numbers using Division method.

48, 60

Important Questions on Less Common Multiple and Highest Common Factor

HARD
The number of 6-digit numbers of the form ababab (in base 10) each of which is a product of exactly 6 distinct primes is
EASY
If a and b are positive integers such that a2-b2 is a prime number, then
EASY
Which of the following number is an odd and prime number?
MEDIUM
The product of two numbers is 6760 and their HCF is 13. How many such pair of numbers can be formed?
MEDIUM
For an integer n, let Sn=n+1,n+2,., n+18. Which of the following is true for all n10 ?
EASY
If x + k is the HCF of x2+5x+6 and x2+8x+15, then what is the value of k?
EASY

The total number of factors of 1156 is: 

(A) 9 

(B) 8 

(C) 10 

(D) 11 

MEDIUM

What is the number of Prime factor in 1518×410×69.

MEDIUM
In finding the HCF of the two numbers by division method, the quotient are 18 and 2 respectively, and the last divisor is 105. What is the sum of the numbers?
HARD
Suppose a,b,c are positive integers such that 2a+4b+8c=328. Then a+2b+3cabc is equal to-
EASY
The sum of the squares of the digits of the largest two-digit prime number is:
EASY

The prime factorisation of 240 is:

(A) 23×32×5 

(B) 24×32×5

(C) 24×3×5

(D) 25×3×5

 

EASY

The sum of all the factors of 156 is: 
(A) 392
(B) 235
(C) 390
(D) 379

EASY
What is the value of half of the HCF of 36 and 144 ?
MEDIUM
In finding the HCF of two numbers by division method, the last divisor is 17 and the quotients are 1,11 and 2 respectively. What is sum of the two numbers?