550
50
If you mean Least Common Multiple; it is 50.
200
10
The least common denominator would be 50
LCM(50, 13) = 650
LCD(25, 2) = 50.
To find the least common denominator, you simply find the smallest number that can divide into both 50 and 60. So 5 is the smallest number that will divide into 50 and 60. The answer is 5
If that's 5/6 and 10/50, the least common denominator is 150. But since 10/50 = 1/5, the least common denominator is 30.
300
This cannot be answered properly because at least two numbers are required.
It is: 50