1
JEE Main 2021 (Online) 25th July Evening Shift
+4
-1
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 :
A
The match will not be played and weather is not good and ground is wet.
B
If the match will not be played, then either weather is not good or ground is wet.
C
The match will be played and weather is not good or ground is wet.
D
The match will not be played or weather is good and ground is not wet.
2
JEE Main 2021 (Online) 25th July Morning Shift
+4
-1
The Boolean expression $$(p \Rightarrow q) \wedge (q \Rightarrow \sim p)$$ is equivalent to :
A
$$\sim$$ q
B
q
C
p
D
$$\sim$$ p
3
JEE Main 2021 (Online) 22th July Evening Shift
+4
-1
Which of the following Boolean expressions is not a tautology?
A
(p $$\Rightarrow$$ q) $$\vee$$ ($$\sim$$ q $$\Rightarrow$$ p)
B
(q $$\Rightarrow$$ p) $$\vee$$ ($$\sim$$ q $$\Rightarrow$$ p)
C
(p $$\Rightarrow$$ $$\sim$$ q) $$\vee$$ ($$\sim$$ q $$\Rightarrow$$ p)
D
($$\sim$$ p $$\Rightarrow$$ q) $$\vee$$ ($$\sim$$ q $$\Rightarrow$$ p)
4
JEE Main 2021 (Online) 20th July Evening Shift
+4
-1
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?
A
(A) is false, but (B) and (C) re true
B
(A) and (C) are true while (B) is false
C
(A) is true while (B) and (C) are false
D
(A) and (B) are false while (C) is true
JEE Main Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination