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Step 6: Print Max.
Step 7: Stop

Solution 3: Using Sorting (More Advanced)
Step 1: Start

Step 2: Input three numbers: A, B, and C.
Step 3: Put the numbers in a list or group: [A, B, C].
Step 4: Sort the list in descending order (largest to smallest).

Step 5: The first number in the sorted list is the greatest.
Step 6: Print the greatest number.

Step 7: Stop
Analysis of Each Solution

Analysing different solutions helps us understand which method is easiest, fastest, or most suitable for
a particular situation. By comparing various approaches, we can choose the best solution that saves
time, uses fewer steps, and is simple to follow—especially important when learning new concepts. This
analysis guides us in making smarter choices when solving problems.

Solution 1: Uses simple if-else statements to compare numbers directly; easy to understand and
great for beginners.
Solution 2: Uses a variable to keep track of the maximum, making the process efficient and easy to
follow with a little more logic.

Solution 3: Sorts the numbers and picks the largest, which is powerful but too complex for just three
numbers.

Solution 1 is best because it is simple, clear, and teaches basic decision-making effectively.

COMPUTATIONAL PROBLEMS THAT CANNOT BE SOLVED

While computers are powerful tools that can solve many problems quickly, there are some problems that no
computer or algorithm can solve—no matter how smart or fast it is. These problems are called unsolvable
or undecidable because there is no guaranteed step-by-step method to always find the answer.
This might seem surprising, but it shows that even with all the technology we have, there are limits to
what computers can do.

Problems Beyond Computational Reach

Some problems are not impossible in theory, but so complex that even the best computers cannot
solve them in a reasonable amount of time. These are called intractable problems.

Some common examples are factoring large numbers quickly and Turing’s Halting problem.
Factoring Large Numbers Quickly

Imagine a huge number made by multiplying two prime numbers (numbers only divisible by 1 and
themselves). Finding those two primes again is called factoring. For very large numbers, factoring takes
a very long time—so long that it’s practically impossible to do quickly. This concept is used in Internet
security to keep information safe.

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