Test your self number system and logic gates

Which of the following decimal numbers is equivalent to the binary number 11011₂

• 11

• 27

• 15

• 23

Which of the following octal numbers is equivalent to the binary number 111110110010₂

• 7552₈

• 2667₈

• 2557₈

• 7662₈

Consider the following statements

A - 2B₁₆ is equivalent to 53₈

B - 43₁₀ is equivalent to 101011₂

C - 101011₂ is equivalent to 53₈

Which of the above statements are true?

• A and B only

• A and C only

• B and C only

• All A,B and C

Which is incorrect about coding system?

• They use to represent data in the computer

• Most personal computers use ASCII or EBCDIC coding system to process data

• ASCII uses 7 bits to represent a number and 128 patterns can be made

• EBCDIC uses 8 bits to represent a number and 256 patterns can be made

Which of the following has the least value?

• 11001001₂

• 145₁₀

• 77₈

• 49₁₆

If the character 'E' is represented as 1000101₂ in ASCII coding scheme,what is the ASCII code for character 'B'?

• 1000001₂

• 1000010₂

• 1000011₂

• 1100101₂

Which of the following format is used in computers to store data?

• Decimal

• Binary

• Octal

• Hexa-decimal

To qualify in an examination ,candidates have to pass one compulsory subjects S₁ and one of the three optional subjects S_2, S₃ and S_{4 .}

Which of the following Boolean expressions correctly represents this scenario?

• S₁ AND (S₂ AND S₃ AND S₄)

• S₁ AND (S₂ OR S₃ OR S₄)

• S₁ OR (S₂ AND S₃ AND S₄)

• S₁ OR (S₂ OR S₃ OR S₄)

Which of the following represents the ascending order of the four numbers 10001111₂,170₈,46687₁₀,2F_{16 ?}

• 170₈, 10001111_2, 2F_16, 46687₁₀

• 10001111_2, 46687₁₀, 170₈, 2F₁₆

• 2F_16, 170_8, 10001111₂, 46687₁₀

• 46687_10, 10001111₂, 170_8, 2F₁₆

Consider the following four

numbers presented in different number systems

11110011₂

F3₁₆

363₈

243₁₀

which of the following statements is true?

• F3₁₆ is larger than other three numbers

• 363₈ is smaller than other three numbers

• Four numbers are equal to each other

• Four numbers are not equal to each other