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.
The Least Common Multiple (LCM) of 11, 22 and 50 is 550.