Logic Building/Phase 1 - Level 5: Creative / Tricky Logical Scenarios/Program

Check Geometric Progression

Take three numbers and check if they are in geometric progression.

Logic BuildingAdvanced

Logic Building

# Take three numbers
a = float(input("Enter first number: "))
b = float(input("Enter second number: "))
c = float(input("Enter third number: "))

# Check GP (avoid division by zero)
if a != 0 and b != 0:
    if (b / a) == (c / b):
        print("Geometric progression")
    else:
        print("Not a geometric progression")
else:
    print("Cannot form GP with zero")

Output

Enter first number: 2
Enter second number: 4
Enter third number: 8
Geometric progression

Enter first number: 2
Enter second number: 5
Enter third number: 8
Not a geometric progression

In GP, ratio between consecutive terms is constant.

Key Concepts:

Check if (b/a) == (c/b)
Handle division by zero
Common ratio must be same

Check Arithmetic Progression

Digit Sum vs Product