1. The gcf of 51 and 68 is a number between 10 and 20. what is the number?
2.Is the gcf of 57 and 95 a prime number?
3. The gcf of 46 and 115 is an odd number between 20 and 30. what is the number?
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1. The gcf of 51 and 68 is a number between 10 and 20. what is the number?
2.Is the gcf of 57 and 95 a prime number?
3. The gcf of 46 and 115 is an odd number between 20 and 30. what is the number?
(show complete solutions)
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Answer:
1.17
2.Yes
3.23
Explanation
1.The factors of 51 are: 1, 3, 17, 51
The factors of 68 are: 1, 2, 4, 17, 34, 68
Then the greatest common factor is 17.
2.The factors of 57 are: 1, 3, 19, 57
The factors of 95 are: 1, 5, 19, 95
Then the greatest common factor is 19.
3.The factors of 46 are: 1, 2, 23, 46
The factors of 115 are: 1, 5, 23, 115
Then the greatest common factor is 23.