10
The Greatest Common Factor (GCF) is: 10
The GCF is 10.
The GCF is 10.
There is no greatest common factor for 41 and 70 because 41 is a prime number.
The least common factor is: 1The least common factor of any two or more positive integers is always 1.
In looking into this question, I believe that one must know the "greatest common factor" between the three. The answer would be "two" - they are all even numbers, and two is the greatest common number between them. Any higher and you get some that factor into one, but not the other (e.g. "four" would work with 40 and 84, but not 70; "seven" would work with 70 and 84 but not 40, and so on). I hope this helps!
63 Range is between 60 and 70, so 7 x 9 = 63. Greatest common factor
40, 50 and 60
The only common factor of 4 and 7 is 1.
LCM: 280 GCD: 10
The greatest common factor of 80 and 100 is 20.
Two methods are commonly used. 1) Factor each number into prime factors. List the common factors between both numers. 2) Use Euclid's algorithm. For example, the greatest common factor of 70 and 40 is the same as the greatest common factor of 40 and 10 (where 10 is obtained by subtracting 70 - 40; or, to be more general, the remainder of the division 70 / 40). Euclid's algorithm is more appropriate for large numbers, since in that case, factoring can be difficult.