In this Python program, we will learn how to find the LCM(Least Common Multiple) of two numbers.

The LCM of the two numbers is the smallest positive integer that is divisible by both the given numbers. For example, the L.C.M. of 5 and 6 is 30.

Here is the code of the program to find the LCM(Least Common Multiple) of two numbers.

```
# Python Program to Find the LCM using if..else statement and while Loop
# Define a Function to Calculate LMC
def compute_LCM(x, y):
# choose the greater number
if x > y:
greater = x
else:
greater = y
while(True):
if((greater % x == 0) and (greater % y == 0)):
lcm = greater
break
greater += 1
return lcm
# To Take Input from the User
num1 = int(input("Enter the First Number: "))
num2 = int(input("Enter the Second Number: "))
print("The L.C.M. of {0} and {1} is {2}".format(num1, num2, compute_LCM(num1, num2)))
```

Enter the First Number: 6

Enter the Second Number: 12

The L.C.M. of 6 and 12 is 12

```
# Python Program to Find the LCM Using GCD
# Define a function To Calculate GCD
def compute_GCD(x, y):
while(y):
x, y = y, x % y
return x
# Define a function To Caluclate LCM using GCD Function
def compute_LCM(x, y):
lcm = (x*y)//compute_GCD(x,y)
return lcm
# To Take Input from the User
num1 = int(input("Enter the First Number: "))
num2 = int(input("Enter the Second Number: "))
print("The L.C.M. of {0} and {1} is {2}".format(num1, num2, compute_LCM(num1, num2)))
```

Enter the First Number: 6

Enter the Second Number: 12

The L.C.M. of 6 and 12 is 12

Enter the First Number: 6

Enter the Second Number: 5

The L.C.M. of 6 and 5 is 30

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