PhilNits Review 1

5 Questions | By Rathan072007 | Updated: Mar 20, 2022 | Attempts: 977

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Questions and Answers

1.

Hospital A has 500 patient rooms, each numbered with a three-digit number beginning at 001. However, the digits 4 and 9 are not used anywhere in any room numbers. What is the room number for the 125th room?
- A.
  
  120
- B.
  
  166
- C.
  
  186
- D.
  
  202
Correct Answer
D. 202

Explanation
there are 77 4's and 9's from 001 to 125

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2.

What is the 8-bit fixed-point binary representation of the decimal number -5.625? In this problem, the decimal point position comes between the 4th and 5th bits, and two’s complement is used for negative numbers.
- A.
  
  01001100
- B.
  
  10100101
- C.
  
  10100110
- D.
  
  11010011
Correct Answer
C. 10100110
3.

The function Random(n) is a function which returns an integer between 0 and n-1 with uniform probability. When the following series of operations is executed for the integer type variables A, B and C, what is the probability that C will be 0? A = Random (10) ; B = Random (10 ); C = A–B
- A.
  
  1/100
- B.
  
  1/20
- C.
  
  1/10
- D.
  
  1/3
Correct Answer
C. 1/10
4.

X NAND Y is the negation logical product of X and Y and is defined as NOT (X AND Y). What is the logical formula for X OR Y using only NAND?
- A.
  
  ((X NAND Y)NAND X)NAND Y
- B.
  
  (X NAND X) NAND (YNAND Y)
- C.
  
  (X NAND Y) NAND (XNAND Y)
- D.
  
  X NAND (YNAND (X NAND Y))
Correct Answer
B. (X NAND X) NAND (YNAND Y)
5.

Which of the following is equivalent to the difference set S-T? In this problem,"?" represents “sum,” "n" represents “product,” and "C" represents “complement.”
- A.
  
  S? (SnT)
- B.
  
  S?T C
- C.
  
  Sn (S?T)
- D.
  
  SnT C
Correct Answer
D. SnT C

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Current Version
Mar 20, 2022

Quiz Edited by
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Dec 14, 2009

Quiz Created by
Rathan072007

Philnits Review 1

Hospital A has 500 patient rooms, each numbered with a three-digit number beginning at 001. However, the digits 4 and 9 are not used anywhere in any room numbers. What is the room number for the 125th room?

What is the 8-bit fixed-point binary representation of the decimal number -5.625? In this problem, the decimal point position comes between the 4th and 5th bits, and two’s complement is used for negative numbers.

The function Random(n) is a function which returns an integer between 0 and n-1 with uniform probability. When the following series of operations is executed for the integer type variables A, B and C, what is the probability that C will be 0? A = Random (10) ; B = Random (10 ); C = A–B

X NAND Y is the negation logical product of X and Y and is defined as NOT (X AND Y). What is the logical formula for X OR Y using only NAND?

Which of the following is equivalent to the difference set S-T? In this problem,"?" represents “sum,” "n" represents “product,” and "C" represents “complement.”