If the Boolean expression (p ⇒ q) ⇔ (q * (∼p) is a tautology, then the boolean expression (p * (∼q)) is equivalent to :
Mathematicsmathematical-reasoning2021medium
If the Boolean expression (p∧q)⊙(p⊗q) is a tautology, then ⊙ and ⊗ are respectively given by :
Mathematicsmathematical-reasoning2021medium
If P and Q are two statements, then which of the following compound statement is a tautology?
Mathematicsmathematical-reasoning2021easy
The Boolean expression (p∧∼q)⇒(q∨∼p) is equivalent to :
Mathematicsmathematical-reasoning2021easy
Consider the following three statements :
(A) If 3 + 3 = 7 then 4 + 3 = 8
(B) If 5 + 3 = 8 then earth is flat.
(C) If both (A) and (B) are true then 5 + 6 = 17.
Then, which of the following statements is correct?
Mathematicsmathematical-reasoning2021medium
Which of the following Boolean expressions is not a tautology?
Mathematicsmathematical-reasoning2021easy
The Boolean expression (p⇒q)∧(q⇒∼p) is equivalent to :
Mathematicsmathematical-reasoning2021easy
Which of the following is the negation of the statement "for all M > 0, there exists x∈S such that x ≥ M" ?
Mathematicsmathematical-reasoning2021easy
Consider the statement "The match will be played only if the weather is good and ground is not wet". Select the correct negation from the following :
Mathematicsmathematical-reasoning2021medium
The compound statement (P∨Q)∧(∼P)⇒Q is equivalent to :
Mathematicsmathematical-reasoning2021easy
If the truth value of the Boolean expression ((p∨q)∧(q→r)∧(∼r))→(p∧q) is false, then the truth values of the statements p, q, r respectively can be :
Mathematicsmathematical-reasoning2021medium
Consider the two statements :
(S1) : (p → q) ∨ (∼ q → p) is a tautology .
(S2) : (p ∧∼ q) ∧ (∼ p ∧ q) is a fallacy.
Then :
Mathematicsmathematical-reasoning2021medium
The statement (p ∧ (p → q) ∧ (q → r)) → r is :
Mathematicsmathematical-reasoning2021medium
The Boolean expression (p ∧ q) ⇒ ((r ∧ q) ∧ p) is equivalent to :
Mathematicsmathematical-reasoning2021medium
Let *, ▢ ∈{∧, ∨} be such that the Boolean expression (p * ∼ q) ⇒ (p ▢ q) is a tautology. Then :
Mathematicsmathematical-reasoning2021medium
Negation of the statement (p ∨ r) ⇒ (q ∨ r) is :
Mathematicsmathematical-reasoning2021easy
Which of the following is equivalent to the Boolean expression p ∧∼ q ?
Physicsunits-and-measurements2021medium
The work done by a gas molecule in an isolated system is
given by, W = \alpha {\beta ^2}{e^{ - {{{x^2}} \over {\alpha kT}}}}, where x is the displacement, k is the Boltzmann constant and T is the temperature. α and β are constants. Then the dimensions of β will be :
Physicsunits-and-measurements2021easy
Match List - I with List - II :
List I
List II
(a)
h (Planck's constant)
(i)
[MLT−1]
(b)
E (kinetic energy)
(ii)
[ML2T−1]
(c)
V (electric potential)
(iii)
[ML2T−2]
(d)
P (linear momentum)
(iv)
[ML2I−1T−3]
Choose the correct answer from the options given below :
Physicsunits-and-measurements2021medium
The pitch of the screw gauge is 1 mm and there are 100 divisions on the circular scale. When nothing is put in between the jaws, the zero of the circular scale lies 8 divisions below the reference line. When a wire is placed between the jaws, the first linear scale division is clearly visible while 72nd division on circular scale coincides with the reference line. The radius of the wire is :