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CBSE Questions for Class 11 Engineering Maths Mathematical Reasoning Quiz 8 - MCQExams.com

P: he studies hard, q: he will get good marks. The symbolic form of " If he studies hard then he will get good marks "is_____
  • qp
  • pq
  • pq
  • pq
Consider the following two statements :
P:   If 7 is odd number, then is divisible by 2.
Q:   If 7 is a prime number, Then is an odd number.
If V1 is the value of the contra-positive of p and V2 Is the truth value of contra-positive of Q, then the orders pair (V1,V2) equals :
  • (T,T)
  • (T,F)
  • (F,T)
  • (F,F)
Negation of compound proposition : If the examination is difficult, then I shall pass if I study hard
  • The examination is difficult and I study hard and I shall pass
  • The examination is difficult and I study hard but I shall not pass
  • The examination is not difficult and I study hard and I shall pass
  • All of these
The cost of an article including the sales tax is Rs .616. The rate of sales tax is 10%,if the shopkeeper has made a profit of 12% , then the cost price of the article is?
  • Rs .350
  • Rs .400
  • Rs .500
  • Rs .800
Consider the following statement
p:you want to success
q:you will find a away,
then the negation of (p ν q)
  • you want success or you will find a way
  • you want of success and you do not find a way
  • if you want of success then you cannot find a way
  • if you do not want to succeed then you will not find a way
If p,q,r are three propositions, then the negation of p(qr) is logically equivalent to
  • (pq)(pr)
  • (pq)(pr)
  • (pq)(pr)
  • (pq)(pr)
If statement (pq)(qr) is false, then truth values of statements p,q,r respectively, can be :
  • FTF
  • TTT
  • FFF
  • FTT
Negation of (pq) is ________________.
  • pq
  • (pq)(p(p))
  • (pq)(p(p))
  • (pq)(pq)
p(qp)=?

  • pq
  • pq
  • pq
  • none of these
Consider the statement "if it is raining, then sky is not filled with clouds which among the Q 7 following is true
  • contrapositive of the given statement "if sky is filled with clouds then it is not raining"
  • converse of the given statement is "If sky is filled with clouds then it is raining"
  • "If it is not raining then sky is filled with clouds" is the inverse of the given statement
  • Both 1 , 2 and 3 are true
The statement P(qr) is not equivalent to
  • (pq)(qr)
  • p(q)r
  • P(r)q
  • pq(pr)(qr)
The false statement in the following is
  • p(p) is a contradiction.
  • (pq)(q→∼p) is a contradiction
  • (p)p is a tautology
  • p(p) is a tautology
Consider the following statements
P:Suman is brilliant
Q:Suman is rich
R:Suman is honest.
The negative of the statement."Suman is brilliant and dishonest, if and only if Suman is rich" can be expressed as
  • [Q(PR)]
  • QPR
  • (PR)Q
  • P(Q↔∼R)
Consider the following two statements: P: if 7 is an odd number, then 7 is divisible by 2.Q: if 7 is a prime number, then 7 is an odd number If V1 is the truth value of the contrapositive of P and V2 is the truth value of contrapositive of Q. Then the ordered pair (V1,V2) equals:
  • (F,F)
  • (T,T)
  • (F,T)
  • (T,F)
Negation of p(pq) is
  • (p)(pq)
  • p(pq)
  • (p)(pq)
  • (p)(pq)
If (pq)(pr)pq is false then the truth values of p,q and r are respectively
  • F,T,F
  • T,F,T
  • F,F,F
  • T,T,T
Consider the following three statements:
P : 5 is a prime number.
Q : 7 is a factor of 192.
R : L.C.M. of 5 and 7 is 35.
Then the truth value of which one of thefollowing statements is true ?
  • (PQ)(R)
  • (P)(QR)
  • (P)(QR)
  • P(QR)
State whether the statement
P: "if x is a real number such that x3+2x=0, then x is 0"  is true/false
  • True
  • False
Which of the following is not a tautology?
  • p(pq)
  • (pq)p
  • (pq)(p(q))
  • (pp)
The negation of p(q r) is
  • p(qr)
  • p(qr)
  • p(q→∼r)
  • p(qr)
Which of the following is not true?
  • If the last column of its truth table contains only F then it is a contradiction
  • Negation of a negation of a statement is the statement itself
  • If p and q are two statements then pq is a tautology
  • If the last column of its truth table contains only T then it is tautology
State whether the statement
P: "if x is a real number such that x3+2x=0, then x is 0" is true/false.
  • True
  • False
Let p(qr) is false, then truth values of p, q, r are respectively.
  • F,T,T
  • T,F,T
  • T,T,F
  • F,F,T
The negation of the boolean expression
s(rs) is equivalent to:
  • r
  • sr
  • sr
  • sr
Determine whether the following compound statements are true or false:
Delhi is in India and 2+2=4
  • True
  • False
Determine whether the following compound statements are true or false:
Delhi is in India and 2+2=5
  • True
  • False
Determine whether the following compound statement are true of false:
Delhi is in England and 2+2=4
  • True
  • False
Determine whether the following compound statements are true or false:
Delhi is in England and 2+2=5
  • True
  • False
Check the validity of the following statement:
p:125 is a multiple of 5 and 7
  • True
  • False
State whether the statement
p: If x is a real number such that x3+19x=0 , then x is 0 is true / False
  • True
  • False
0:0:2


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