I am guessing you want common factors. That is to say factors common to 10 and 30 The common factors would be: 1,2, 5, and 10, but there only 4 that are common. 15 and 30 are factors of 30 so if you add those you have 6 factors.
Just 1
Factors of 20: 1, 2, 4, 5, 10, 20Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30Factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80Common factors of 20, 30, and 80: 1, 2, 5, 10
The common factors of 30 and 300 are the numbers that can divide both 30 and 300 without leaving a remainder. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors of 300 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, and 300. Therefore, the common factors of 30 and 300 are 1, 2, 3, 5, 6, 10, 15, and 30.
Factors of 20:1,2,4,5,10,20Factors of 65:1,5,13,65The common factors are 1 and 5.
The common factors of 20 and 30 are 1, 2, 5, and 10.
The common factors are: 1, 2, 5, 10.
Four common factors.
The factors of 10 are: 1, 2, 5, 10.The factors of 20 are: 1, 2, 4, 5, 10, 20.The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30.The common factors are: 1, 2, 5, 10.
20/30 - look for common factors between the top (numerator) and bottom (denominator) numbers. Both divide by 10: 20/30 = 2/3 No more common factors, answer: 20/30 = 2/3
They are 1 and 5
2
The factors of 20 are 1, 2, 4, 5, 10, and 20The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30The common factors of 20 and 30 are 1, 2, 5, and 10
20 = 2 x 2 x 5 30 = 2 x 3 x 5 Common prime factors: 2 and 5.
The greatest common factor is 10.
2
1,2,5 & 10