 ### Computer Basics

 Description: Increasing Mathematics as well as Computer Basics knowledge to Crack Various Competitive Exams Number of Questions: 25 Created by: Rani Rajan Tags: Mathematics/Conputer Mathematics Math Polynomials Algebra Multiplication Factors Circle Triangle Trigonometry Sphere Cone Cube Computer History Fundamentals Computer Basics Basics of Computers A to Z in Computers Basic Fundamentals Hardware and Software Reading Comprehension Inference Attitude or Tone Logical Reasoning Analytical Ability and Logical Reasoning (New) Blood Relations Blood Relation
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Decimal representation of a number ( 1010.01 )2 is

1. 9.25

2. 10.25

3. 9.50

4. 10.50

Correct Option: B

Decimal representation of a numeral (A1.4)16 is

1. 11.4

2. 161.4

3. 101.25

4. 161.25

Correct Option: D

Hexadecimal numeral corresponding to the decimal number 0.125 is

1. (0.2)16

2. (0.1)16

3. (0.02)16

4. None of these

Correct Option: A

Decimal form of a number (100)2 is

1. 8

2. 100

3. 4

4. None of these

Correct Option: C

The sum of the numbers (11011)2 & (101.2)2 is

1. (11112.1)2

2. 11112.1

3. (100.1)2

4. None of these

Correct Option: C

A computer can execute

1. a flow chart

2. a program

3. an algorithm

4. None of these

Correct Option: B

A basic control structure always has

1. one entry two exist points

2. two entry & one exist points

3. any number of entry & exist points

4. one entry & one exists points

Correct Option: D

The FOR-DO constructs executes the loop at least

1. once

2. twice

3. thrice

4. None of these

Correct Option: A

RAM stands for

1. random access memory

3. random and memory

4. None of these

Correct Option: A

The heart & the serve center of a computer is its

1. input unit

2. CPU

3. output unit

4. memory

Correct Option: B

ROM stands for

3. random only memory

4. None of these

Correct Option: B

What is the meaning of hard copy?

1. raw material

2. superior material

3. printed computer output

4. None of these

Correct Option: C

The number of significant digit in 0.003050 is

1. 7

2. 6

3. 4

4. None of these

Correct Option: C

LED stands for

1. light emitting diode

2. light emitting door

3. light emitting driver

4. None of these

Correct Option: A

The number 3.68451 when rounded off to three decimal place becomes

1. 3.68

2. 3.684

3. 3.685

4. None of these

Correct Option: C

The number of significant digit in 0.4 is

1. 5

2. 4

3. 1

4. None of these

Correct Option: C

When the number 2.089 is rounded off to three significant digits, the absolute error is

1. 0.01

• 0.01
2. 0.001

3. 1 - .001

Correct Option: D

When a number is rounded off to n decimal place, the magnitude of relative error does not exceeds

1. 10 - n

2. 10 - n + 1

3. 0.5 ´ 10 - n + 1

4. None of these

Correct Option: C

When a number is approximated to n decimal place by chopping off the extra digits, the absolute value of the relative error does not exceed

1. 10 - n

2. 10 - n + 1

3. 0.5 ´ 10 - n + 1

4. Nothing can be said

Correct Option: B

The number 0.0008857 when rounded off to three significant yields

1. 0.001

2. 0.000886

3. 0.000885

4. None of these

Correct Option: B

The number of significant digit in 20340 is

1. 4

2. 5

3. 3

4. None of these

Correct Option: A

Binary representation of the numeral ( in decimal form ) 7 is

1. (101)2

2. (111)2

3. (1001)2

4. None of these

Correct Option: B

The WHILE-DO constructs executes the loop at least

1. once

2. twice

3. thrice

4. None of these

Correct Option: D

An algorithm must have at least

1. one output

2. one input

3. one assignment

4. None of these

Correct Option: A

The number of significant digit in 20.035 is

1. 3

2. 2

3. 1

4. None of these

Correct Option: B
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