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## Chapter 1 Number System

Brain Developers
A. Fill in the blanks:
1. The base of Binary number system is
2.
2. The base of
Decimal number system 10.
3. Octal number system consists of
8 digits.
4. In Binary addition, 1 + 1 equals to
10.
5.
Binary number system is understood by the computer system.
6.
Hexadecimal uses 16 symbols to represent numbers.
7. In Binary subtraction, 1 - 1 equals
0.

B. State True or False:
1. The decimal number system consists of 10 digit i.e., 0 to 9. (
True)
2. The method to perform division of two binary number is not same as that of the decimal numbers. (
False)
Correct Answer: The method to perform division of two binary number is same as that of the decimal numbers.
3. 1 multiplied by 0 equals to 0. (
True)
4. Charles Babbage introduced the concept of 0 [Zero]. (
False)
Correct Answer: Aryabhatt introduced the concept of 0 [Zero].
5. The number used in Octal number system are 1 to 7. (
False)
Correct Answer: The number used in the Octal number system are 0 to 7.

C. Application Based Question:
1. Ratika's computer teacher asked her to convert the Octal number to Decimal number. Suggest her the method which she should apply in converting the Octal number.
Multiply each octal number with 8 having the power 0 for unitary position,starting from the extreme right digit.

2. The teacher has given as assignment to Saurabh on Binary subtraction. Saurabh is confused how to subtract 1 from 0. Help him solving the problem.
He can solve this by borrow method as (0 - 1 = 1).

D. Multiple Choice Questions:
1. ____________ introduced the concept of 0 [Zero].
b) Aryabhatt
c) Bill Gates
b) Aryabhat

2. A _________ converts the decimal format into its binary equivalent.
a) Digital computer
b) Cell phone
c) Abacus
a) Digital Computer

3. A computer understands only _________ code.
a) English
b) French
c) Binary
c) Binary

4. In Binary multiplication, 1 x 1 equals to _______.
a) 0
b) 1
c) 2
b) 1

5. To convert Decimal number into Binary number, divide the number by ________.
a) 2
b) 8
c) 10
a) 2

E. Answer the following:
1. Explain Number system and its commonly used types.
Number system is a way to represent the numbers in the computer architecture. There are four different types of number system -
a) Binary number system
b) Octal number system
c) Decimal number system
d) Hexadecimal number system

2. What are the rules to convert a Decimal number into Binary number?

Step 1: Divide the given decimal number with the base 2.
Step 2: Write down the remainder and divide the quotient again.
Step 3: Repeat the step 2 until the quotient is 0.

3. Write the rules to multiply 2 binary numbers.
The rule for performing multiplication using binary numbers is the same that of the numbers. 0 x 0 = 0, 0 x 1 = 0, 1 x 0 = 0 & 1 x 1 = 1.

4. Briefly explain the Octal number system.
Octal number system consists of 8 digits i.e . 0 to 7 with the base 8.

5. What do you understand by hexadecimal number system?
Hexadecimal number system contains 16 digits, and therefore, has the base 16. It uses the digits (0 - 9) and (A - F).

1. thanks for this amazing solution but please mention Que-5 what do you under stand by hexadecimal number system? in this solution please and thanks

1. Ok thanks for your suggestion!

2. Keep visiting our website!

3. Where is 5th answer

4. Please mention the question...

5. nice i had a good practice of my concepts for my exam

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7. Thank you very much

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2. please make notes for this chapter

1. Ok sure! We shall consider your suggestion...

2. Where Is 5 answer

3. The question is 👇🏻
What do you understand by the Hexadecimal number system?

4. The Question is 👇🏻
What do you understand by the Hexadecimal number system?

5. Okay, thanks for updating us! We have added Question 5, do check once...

3. BUT WHEN PLEASE TELL ME

4. Good One Sir...Put the Textbook Sums as well..

1. Ok sure! We shall...

5. Anonymous12 July, 2021

Thanks for this post

1. Welcome :)

6. Anonymous13 July, 2021

1. Thanks for your positive feedback! 😀

7. NICE SUPER USEFUL OF THIS SOLUTIONS I LIKE IT IT WAS EAST

1. 8. Where is answer 5

1. Please type the fifth question...

2. 5th question is "what do you understand by hexadecimal number system?"

3. Hi user,

This number system contains 16 digits, and therefore, has the base 16. It uses the digits (0 - 9) and (A - F).

9. Please can u add 5th one solution.

1. Could you please type that question, so that we can get back to you...

10. hello in the 2 answer please write repeat the step 2 not repeat step 3 please

1. Please check once again... It is written step 2 and not step 3

11. 1. 12. thank you sir

1. 2. 3. Welcome! It is our pleasure to share our knowledge with you... Thanks to you too!

13. book to dekhado bhai

14. good i love it very help me

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2. Can you please give link for chapter 2 types of software

3. Hi,
Actually we are providing solutions of Kips IT Beans Class 6 and Class 7 only.

15. Thanks
Sir

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16. Please I want the notes of the chapter number system because I think it is a bit tough

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17. Please post the pdf of book also

1. Okay Aman Sharma! Thanks for your feedback...

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19. Thank you so much

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