To find the least common multiple you first need to identify the prime factors of the two numbers. In this case:
99 = 3x3x11
121 = 11x11
The next step is to identify any common factors and discard the duplicate. In this case, both numbers have 11 as a common factor, so we can discard one, leaving us with 3, 3, 11 and 11. Multiply these together to find the LCM:
3x3x11x11=1,089
Thus the least common multiple of 99 and 121 is 1,089
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Factors of 99: 1, 3, 9, 11, 33, 99
Factors of 121: 1, 11, 121
GCF (99, 121) = 11
It is: 11
The greatest common factor of 4 and 99 is 1.
The GCF of 75 and 99 is 3.
3 is the greatest common factor of 69 and 99.
The common factors of 99 and 121 are the numbers that can evenly divide both 99 and 121 without leaving a remainder. The factors of 99 are 1, 3, 9, 11, 33, and 99. The factors of 121 are 1, 11, and 121. Therefore, the only common factor of 99 and 121 is 1.