There are 4 numbers - 1, 55, 5, 11.
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1, 5, 11 and 55
1 and 5
1, 5, 11, 25, 55, 275.
The greatest common factor (GCF) of two numbers is the largest number that divides evenly into both numbers. In this case, the factors of 55 are 1, 5, 11, and 55. The factors of 5 are 1 and 5. The greatest common factor of 55 and 5 is 5, as it is the largest number that divides evenly into both 55 and 5.
0.55 means "fifty-five one hundredths". As a fraction we can therefore write this as 55/100.We can then look to see if we can simplify this fraction by finding a positive whole number which evenly divides into both numbers (other than 1 of course!).Here, the largest number which evenly divides into both 55 and 100 is 5. 55/5 = 11 and 100/5 = 20. Therefore we simplify this fraction to 11/20.