Which of these are coprime
(a) 16,18
(b) 11,48
(c) 8,23
In number theory, Coprime numbers are those numbers if the only positive factor that divides them is 1.
Here,
Option A: (16,18) Factors that divide both of them are 1,2.
Option B: (11,48) Factor that divides both of them is 1.
Option C: (8,23) Factor that divides both of them is 1.
In reference to above definition both b and c are coprime numbers.
3 is a factor of 36
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.
Hence, 3 is a factor of 36.
The LCM of two number is 84. Which one of the following can’t be their HCF.
LCM is divisible by HCF.
Hence, 8 cannot be the HCF because 84 is not divisible by 8.
918573 can be divisible by 3
Using divisibility rule:
9+1+8+5+7+3 = 33,
33 is divisible by 3 ( 11×3)
So, 918573 is divisible by 3.
How many prime numbers are there between 1 and 100.
The Prime numbers between the numbers 1 to 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
Here, we can see that the total count of prime numbers is 25.
1 is prime number
No, it is not a prime number.
The factor of a number is less than or equal to that number.
A factor of a number is always less than or equal to the given number. Every number except 0 and 1 has at least two factors, 1 and itself.
The LCM of two co prime number is 176. If one number is 16, find the other number.
The product of 2 coprime numbers is equal to their LCM.
Hence, if one number is 16 other one is
HCF of coprime no. is always
The HCF of two numbers is 6 and their LCM is 144. If one of the numbers is 36, the other is
Let the other number be x
Product of two numbers = HCF × LCM
x × 36 = 6 × 144
Hence, the other number is x = 24
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