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Phrases Data Representation - Number System PYQ


Phrases PYQ
If we can generate a maximum of 4 Boolean functions using n Boolean variables, what will be minimum value of n?

NIMCET PREVIOUS YEAR QUESTION 





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Phrases Computer PYQPhrases Boolean algebra PYQ

Solution

Question: If we can generate a maximum of 4 Boolean functions using n Boolean variables, what is the minimum value of n?

Formula: Number of Boolean functions of $n$ variables is:

\[ 2^{2^n} \]

Condition: We are told the total functions must be ≤ 4:

\[ 2^{2^n} \leq 4 \]

✅ Try values of $n$:

  • $n = 0$: $2^{2^0} = 2^1 = 2$ ✅
  • $n = 1$: $2^{2^1} = 2^2 = 4$ ✅
  • $n = 2$: $2^{2^2} = 2^4 = 16$ ❌

Minimum $n$ for which number of Boolean functions ≤ 4 is:

\[ \boxed{1} \]

✅ Final Answer: $\boxed{1}$


Phrases PYQ
The representation of a floating point binary number +1001.11 in 8 bit fraction and 6 bit exponent format is





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Phrases Previous Year PYQPhrases NIMCET 2017 PYQ

Solution

✅ Given:

The floating-point binary number is \( +1001.11_2 \).

We need to convert it into an 8-bit fraction and a 6-bit exponent format.

✅ Step 1: Normalize the Binary Number

We start by normalizing the binary number into scientific notation of the form:

\( 1.xxxx \times 2^n \)

Converting \( 1001.11_2 \) into scientific notation gives:

\( 1001.11_2 = 1.00111_2 \times 2^3 \)

The exponent is \( 3 \) (because the binary point is shifted 3 places to the left).

✅ Step 2: Convert the Exponent to Binary

The exponent is \( 3 \) in decimal. To represent this in binary using 6 bits, we get:

\( \text{Exponent} = 000100_2 \)

✅ Step 3: Convert the Fraction to 8 Bits

The fractional part of the normalized binary number is \( 00111 \). We need to extend it to 8 bits:

\( \text{Fraction} = 01001110_2 \)

✅ Final Answer:

The floating-point binary number \( +1001.11_2 \) in 8-bit fraction and 6-bit exponent format is:

Exponent: \( 000100_2 \), Fraction: \( 01001110_2 \)


Phrases PYQ
Consider the equation (40)x = (132)y is some bases x and y. Then a possible set of value of x and y are





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Phrases Previous Year PYQPhrases NIMCET 2017 PYQ

Solution

$\begin{array}{ll}{{{(40})}_x={{(132)}}_y} \\ {\Rightarrow4\times{x}^1}+0\times{x}^0=1\times{y}^2+3\times{y}^1+2\times{y}^0 \\ {\Rightarrow4x+0={y}^2+3y^{}+2} \\ {4x={y}^2+3y^{}+2}\end{array}$

Phrases PYQ
Suppose we have a 10-bit computer that uses 10-bit int (2's complement representation). the number representation of - 35 is





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Phrases Previous Year PYQPhrases NIMCET 2023 PYQ

Solution

10-bit 2's Complement Representation of –35

Format: 10-bit signed integer using 2's complement representation.

Step-by-Step:

  1. First, convert 35 to 10-bit binary: 0000100011
  2. Find 1's complement: 1111011100
  3. Add 1 (to get 2's complement): 1111011101

✅ Final Answer: 1111011101

 –35 in 10-bit 2's complement: 1111011101


Phrases PYQ
What is a potential problem of 1’s complement representation of numbers?





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Solution


Phrases PYQ
In IEEE single precision floating point representation, exponent is represented in ______





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Solution


Phrases PYQ
With 4-bit 2's complement arithmetic, which of the following addition will result in overflow?





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Solution


Phrases PYQ
If the 2's complement representation of a number is (011010)2 , what is its equivalent hexadecimal representation?       





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Solution

2's Complement to Hexadecimal Conversion

Given the 2's complement binary number: (011010)
Find its equivalent hexadecimal representation.

Since the number has 6 bits, group the bits into two groups of 4 bits (add leading zeros if needed):
$$ (011010)_2 = (00011010)_2 $$

Now, split into two nibbles (4 bits each):
$$ 0001 \quad 1010 $$

Convert each nibble to hexadecimal:
- \(0001_2 = 1_{16}\)
- \(1010_2 = A_{16}\)

Therefore, the hexadecimal representation is: 1A


Phrases PYQ
The base ( or radix) of the number system such that the following equation holds 312/20 = 13.1 is





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Solution


Phrases PYQ
Which of the following represents (D4)16 ?





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Solution



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