Question 188 – ISRO CS 2008
April 16, 2024
Question 7851 – Data-Structures
April 17, 2024
Question 188 – ISRO CS 2008
April 16, 2024
Question 7851 – Data-Structures
April 17, 2024

ISRO CS 2015

Question 1
Which of the given number has its IEEE-754 32 bit floating point representation as
A
2.5
B
3.0
C
3.5
D
4.5
Question 1 Explanation: 
→ Sign bit S = 0 (It means positive number)
→ E=1000 0000B = 128D (in normalized form)
→ Fraction is 1.11B (with an implicit leading 1) = 1 + 1×2-1 + 1×2-2
= 1.75D
→ The number is +1.75 × 2(128-127)
= +3.5D
Correct Answer: C
Question 1 Explanation: 
→ Sign bit S = 0 (It means positive number)
→ E=1000 0000B = 128D (in normalized form)
→ Fraction is 1.11B (with an implicit leading 1) = 1 + 1×2-1 + 1×2-2
= 1.75D
→ The number is +1.75 × 2(128-127)
= +3.5D

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