Fill in the blanks.

Question 11 Mark

Difference of two binary numbers 1011-101 = _________________

Answer

0110, because
$\begin{array}{r}1 &0&1&1 \\ -\quad &1&0&1 \\ \hline 0&1&1& 0 \\ \hline\end{array}$

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Question 21 Mark

Sum of binary numbers 111 + 100 is _________________

Answer

1011, because
$\begin{array}{r}1 &1&1 \\ +\quad 1&0&0 \\ \hline 10&1&1 \\ \hline\end{array}$

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Question 31 Mark

The input hexadecimal representation of 1110 is _________________

Answer

E, because
In hexadecimal number system 1110 = 15, which is represented by the alphabet E .

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Question 41 Mark

The octal equivalent of 1100101.001010 is _________________

Answer

145.12 , because
The octal equivalent is obtained by grouping the numbers into three bit from right to left before decimal and from left to right after the decimal place.
Here,

Hence, 145.12 is the octal equivalent of the number.

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Question 51 Mark

If the decimal number is a fraction then its binary equivalent is obtained by _________________ the number continuously by 2 .

Answer

Multiplying, because
On multiplying the decimal continuously by 2 , the binary equivalent is obtained by the collection of the integer part. However, if it's binary equivalent is determined by dividing the number by 2 and collecting the remainders.

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