Which of the following is a tautology ? from Mathematics Mathema

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 Multiple Choice QuestionsMultiple Choice Questions

31.

API stands for

  • Access Programming Interface

  • Android Programming Interface

  • Application Programming Interface

  • None of the above


32.

System software : Utility software : :

  • Operating system· Anti-virus

  • Anti-virus Operating system

  • Anti-virus MS office

  • MS office Anti-virus


33.

ISP stands for

  • Instructions Set Processor

  • Information Standard Processing

  • Interchange Standard Protocol

  • Interrupt Service Procedure


34.

The 8-bit encoding format used to store data in a computer is known as

  • ASCII

  • ANCI

  • EBCDIC

  • USCII


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35.

The small extremely fast RAM's are called as

  • cache

  • heaps

  • accumulators

  • stacks


36.

The brain of any computer system is

  • ALU

  • memory

  • CPU

  • control unit


37.

Which of the following is not an output device ?

  • Projector

  • Speaker

  • Printer

  • Mouse


38.

The full form of IP is

  • Interface Program

  • Internet Protocol

  • Internet Program

  • Interface Protocol


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39.

The contrapositive of the statement “If I reach the station in time, then I will catch the train” is:

  • If I will catch the train, then I reach the station in time.

  • If do not reach the station in time, then I will not catch the train

  • If I do not reach the station in time,then I will catch the train.

  • If I will not catch the train, then I do not reach the station in time.


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40.

Which of the following is a tautology ?

  • ~ p  p  q  q

  • q  p  ~ p  q

  •  ~ q  p  q  q

  • p  q  q  p


A.

~ p  p  q  q

i ~ p  p  q  q~ p  p  ~ p  q  qC  ~ p  q  q~ p  q  q~ ~ p  q  q= p  ~ q  q = p  t = tiii ~ q  p  q  q= ~ q  p  ~ q  q  q= ~ q  p  q= q  ~ p  q= qii and iv
p q p  q q  p ~p  q p  q  q  p q p  ~ p  q
T T T T F T T
T F F T T F T
F T T F F F F
F F T T T T T

 


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