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ISC Class 12 Computer Science Specimen Practical 2020 | Q1 Solution - Evil Number

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In this video, we solve Question 1 from the ISC Class 12 Computer Science Specimen Practical 2020 paper. The task is to *check whether a number is an Evil Number* .

An Evil Number is a positive whole number whose binary equivalent contains an even number of 1s. We go step-by-step, from understanding the concept to writing and explaining the complete Java program.

What you’ll learn in this video:
Definition and concept of Evil Numbers
Converting a decimal number to binary in Java
Counting the number of 1s in a binary representation
Checking for even/odd count of 1s
Implementing a clean and efficient Java program for ISC practicals
Testing with multiple examples to ensure accuracy
Print the output in a formatted manner using printf

📚 Perfect for:
ISC Class 12 Computer Science students
Students preparing for ISC Java practical exams
Beginners learning binary number concepts in Java
Anyone revising past year/specimen paper coding questions

Questions solved for ISC 2020 Computer Science Specimen Practical Paper
Question 2 :    • ISC Class 12 Computer Science Specimen Pra...  
Question 3 :    • ISC Class 12 Computer Science Specimen Pra...  

Questions solved for ISC 2020 Computer Science Boards Practical Paper
Question 1 (Check Prime-Adam integers) :    • ISC Class 12 Computer Science 2020 Boards ...  
Question 2 (Matrix question - octal to decimal equivalent) :    • ISC Class 12 Computer Science 2020 Boards ...  
Question 3 (Sort words of sentence by length) :    • ISC Class 12 Computer Science 2020 Boards ...  

Questions solved for ISC 2020 Computer Science Boards Theory Paper
Question 7 :    • ISC Class 12 Computer Science 2020 Boards ...  
Question 8 :    • ISC Class 12 Computer Science Boards Theor...  
Question 9 :    • ISC Class 12 Computer Science Boards Theor...  
Question 10 :    • ISC Class 12 Computer Science Boards Theor...  
Question 11 :    • ISC Class 12 Computer Science Boards Theor...  

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📌 Channel: CodeWithBK
📌 Language: English (with simple explanations)
📌 Board: ISC Class 12
📌 Year: 2020
📌 Programmin Language: Java
📌 Level: Beginner-friendly
📌 Topic: Numbers, Binary Numbers, Decimal to Binary, Java coding

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ISC 2024 Boards Full Paper Solved:    • ISC Class 12 Computer Science 2024 Boards ...  
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