🐍 Beginner Python Practical Problems – Set 1

This file contains 10 beginner-friendly problems with questions, algorithms, and Python solutions.
Set 1 Questions:

1. Write an algorithm to add three numbers.
2. Write an algorithm to add 2 numbers and subtract from the 3rd number.
3. Write an algorithm to add 2 numbers where a = 10 and b = 20.
4. Write an algorithm to evaluate the following expressions:
   • 10 + 20 - 30 + 5
   • $5 + 10 Rs
5. Evaluate {a+b-10}/x where a=10, x=2, b is given by the user.
6. A man takes salary & saves some amount of it and spends double the savings. How much did he spend? (derive formula and implement)
7. Harish works for 30 days & earns salary. He pays 30% as tax. How much tax does he pay?
8. Harish has a worker; he pays 1/4 of the tax as salary. How much does he pay? (extension of previous question)
9. Harish removes the worker and saves money previously given to worker & half of tax. What is total savings?
10. Mythili rents a brush for 4 days and does not use it for 3 days. When not used, the website charges 30% of daily usage. Calculate total weekly charges.

---

1️⃣ Add Three Numbers

Question: Write an algorithm to add three numbers.

Algorithm:

1. Take three numbers as input from the user.
2. Add the three numbers.
3. Print the result.

a = int(input("Enter first number: "))
b = int(input("Enter second number: "))
c = int(input("Enter third number: "))
sum_total = a + b + c
print("Sum of three numbers:", sum_total)

---

2️⃣ Add Two Numbers and Subtract from Third

Question: Write an algorithm to add 2 numbers and subtract from the 3rd number.

a = int(input("Enter first number: "))
b = int(input("Enter second number: "))
c = int(input("Enter third number: "))
result = c - (a + b)
print("Result:", result)

---

3️⃣ Add Two Numbers (a=10, b=20)

Question: Write an algorithm to add 2 numbers where a = 10 and b = 20.

a = 10
b = 20
sum_ab = a + b
print("Sum of a and b:", sum_ab)

---

4️⃣ Evaluate Expressions

Question: Write an algorithm to evaluate:

• 10 + 20 - 30 + 5
• $5 + 10 Rs

# Expression 1
expr1 = 10 + 20 - 30 + 5
print("10 + 20 - 30 + 5 =", expr1)

# Expression 2: $5 + 10 Rs (convert USD to INR first)
usd_to_inr = 82
amount_usd = 5
amount_rs = 10

amount_usd_in_rs = amount_usd * usd_to_inr
total_amount = amount_usd_in_rs + amount_rs
print("5 USD + 10 Rs =", total_amount, "Rs")

---

5️⃣ Evaluate {a+b-10}/x

Question: {a+b-10}/x where a=10, x=2, b is given by user

a = 10
x = 2
b = int(input("Enter value for b: "))
result = (a + b - 10) / x
print("Result of (a+b-10)/x:", result)

---

6️⃣ Salary, Savings, and Spending

Question: A man takes salary & saves some amount. Spending = 2 × savings. Find spending.

salary = float(input("Enter salary: "))
savings = float(input("Enter savings: "))
spending = 2 * savings
print("Amount spent:", spending)

---

7️⃣ Salary Tax Calculation

Question: Harish pays 30% tax on salary.

salary = float(input("Enter salary: "))
tax = (30 / 100) * salary
print("Tax to pay:", tax)

---

8️⃣ Worker Salary from Tax

Question: Worker salary = 1/4 of tax.

tax = float(input("Enter tax amount: "))
worker_salary = tax / 4
print("Worker salary:", worker_salary)

---

9️⃣ Total Savings after Removing Worker

Question: Savings = previous worker salary + half of tax.

worker_salary = float(input("Enter previous worker salary: "))
tax = float(input("Enter previous tax: "))
tax_savings = tax / 2
total_savings = worker_salary + tax_savings
print("Total savings:", total_savings)

---

🔟 Rental Charges Calculation

Question: Mythili rents a brush 4 days, not used 3 days. Not-used charge = 30% of daily usage.

daily_rent = float(input("Enter daily rent: "))
used_days = 4
not_used_days = 3

total_amount = (daily_rent * used_days) + (daily_rent * 0.3 * not_used_days)
print("Total amount to pay for the week:", total_amount)

---

🐍 Beginner Python Practical Problems – Set 2

This file contains 9 practical problems with questions, algorithms, formulas, and Python implementations, focusing on real-life applications and beginner-friendly logic.

Set 2 Questions:

1. Nikhil, a movie fan, contributes to a rating system where votes are counted in multiples of 1,000. Represent votes as '1K', '1.5K', etc.
2. Preeti buys oil from Russia at $50/10 liters. Calculate cost in INR. Part B: Russia gives $2 discount/10 liters. Calculate discount for 1 barrel (158.987 liters).
3. Neha wants to play 170 minutes. Display in xh : ym format.
4. Manya fills first name, last name, age, percentage. Display first name, last name, full name.
5. Take salary as input. If >50,000 → "middle class", else "lower middle class".
6. Take salary as input. If >50,000 → "upper middle class", else add 7% increment.
7. Input character 'm' for male, 'f' for female (case-insensitive).
8. Menu-driven addition: choice = 1 → add two numbers, else wrong choice.
9. Salary >50,000 → Deduct 10% tax. If remaining salary >50,000 → Deduct 2% more.

---

1️⃣ Display Votes in 'K' Format

Question:
Nikhil, a movie fan, contributes to a rating system where votes are counted in multiples of 1,000. To make displayed ratings easier, represent every 1,000 votes as '1K'. For example, 1,500 votes → '1.5K'.

Algorithm:

1. Take the number of votes as input.
2. Check if votes > 0.
3. Divide votes by 1000 → votes_in_k.
4. Display as formatted string with K.

votes = int(input("Enter number of votes: "))
if votes > 0:
    votes_in_k = votes / 1000
    print(f"Votes Display: {votes_in_k}K")
else:
    print("No votes yet")

Example Output:

Enter number of votes: 1500
Votes Display: 1.5K

---

2️⃣ Oil Purchase from Russia

Question Part A:
Preeti buys oil from Russia at $50 for 10 liters. How much does she pay in INR?

Question Part B:
Russia gives $2 discount per 10 liters. How much discount for 1 barrel (1 barrel = 158.987 liters)?

Algorithm Part A:

1. Take liters needed.
2. Calculate cost in USD: (liters / 10) * 50.
3. Convert USD to INR: USD * 82.
4. Print total amount.

# Part A
liters_needed = float(input("Enter liters to buy: "))
price_per_10_liters_usd = 50
usd_to_inr = 82
total_usd = (liters_needed / 10) * price_per_10_liters_usd
total_inr = total_usd * usd_to_inr
print("Total price to pay (INR):", total_inr)

Algorithm Part B:

1. Barrel liters = 158.987
2. Discount per 10 liters = $2
3. Units = barrel_liters / 10
4. Total discount = units * 2 USD → convert to INR

barrel_liters = 158.987
discount_per_10_liters_usd = 2
usd_to_inr = 82
units = barrel_liters / 10
total_discount_usd = units * discount_per_10_liters_usd
total_discount_inr = total_discount_usd * usd_to_inr
print("Discount for 1 barrel (INR):", total_discount_inr)

---

3️⃣ Convert Minutes to Hours and Minutes

Question:
Neha has 170 minutes to play. Show it in xh : ym format.

Algorithm:

1. Hours = minutes // 60
2. Remaining minutes = minutes % 60
3. Print formatted string

total_minutes = int(input("Enter total minutes: "))
hours = total_minutes // 60
minutes = total_minutes % 60
print(f"{hours}h : {minutes}m")

Example Output:

Enter total minutes: 170
2h : 50m

---

4️⃣ Display Full Name

Question:
Manya fills first name, last name, age, percentage. Display first name, last name, and full name.

Algorithm:

1. Take first name, last name, age, percentage
2. Concatenate first and last name → full name
3. Print all

first_name = input("Enter first name: ")
last_name = input("Enter last name: ")
age = int(input("Enter age: "))
percentage = float(input("Enter percentage: "))
full_name = first_name + " " + last_name
print("First Name:", first_name)
print("Last Name:", last_name)
print("Full Name:", full_name)

---

5️⃣ Salary Classification – Middle Class

Question:
If salary > 50,000 → "middle class", else "lower middle class".

salary = float(input("Enter salary: "))
if salary > 50000:
    print("Middle class")
else:
    print("Lower middle class")

---

6️⃣ Salary Increment if Below 50,000

Question:
If salary > 50,000 → upper middle class. Else, add 7% and show new salary.

salary = float(input("Enter salary: "))
if salary > 50000:
    print("Upper middle class")
else:
    salary = salary + (salary * 0.07)
    print("Updated Salary with 7% increment:", salary)

---

7️⃣ Character Input – Male or Female

Question:
Input 'm' for male, 'f' for female, case-insensitive.

gender = input("Enter gender (m/f): ")
if gender.lower() == 'm':
    print("Male")
elif gender.lower() == 'f':
    print("Female")
else:
    print("Invalid input")

---

8️⃣ Menu Driven – Add Two Numbers

Question:
Choice = 1 → add two numbers, else wrong choice.

choice = int(input("Enter your choice (1 to add): "))
if choice == 1:
    num1 = int(input("Enter first number: "))
    num2 = int(input("Enter second number: "))
    print("Sum =", num1 + num2)
else:
    print("Wrong choice")

---

9️⃣ Nested If – Salary Tax Deduction

Question:
If salary > 50,000 → Deduct 10% tax. If remaining salary > 50,000 → Deduct 2% more.

salary = float(input("Enter salary: "))

if salary > 50000:
    salary -= salary * 0.10  # Deduct 10%
    if salary > 50000:
        salary -= salary * 0.02  # Deduct 2% more
print("Final Salary after tax:", salary)

---

---

✅ Notes for Beginners:

• Always break problems into steps (algorithm) before coding.
• Use variables clearly for each part of calculation.
• Test with different inputs to ensure correctness.
• These problems cover basic arithmetic, percentage, loops, and user input, which strengthens your core Python fundamentals.