1
GATE CSE 2023
MCQ (Single Correct Answer)
+1
-0.33

Let $$A = \left[ {\matrix{ 1 & 2 & 3 & 4 \cr 4 & 1 & 2 & 3 \cr 3 & 4 & 1 & 2 \cr 2 & 3 & 4 & 1 \cr } } \right]$$ and $$B = \left[ {\matrix{ 3 & 4 & 1 & 2 \cr 4 & 1 & 2 & 3 \cr 1 & 2 & 3 & 4 \cr 2 & 3 & 4 & 1 \cr } } \right]$$.

Let $$\mathrm{det}(A)$$ and $$\mathrm{det}(B)$$ denote the determinates of the matrices A and B, respectively.

Which one of the options given below is TRUE?

A
$$\mathrm{det}(A)=\mathrm{det}(B)$$
B
$$\mathrm{det}(B)=-\mathrm{det}(A)$$
C
$$\mathrm{det}(A)=0$$
D
$$\mathrm{det}(AB)=\mathrm{det}(A)+\mathrm{det}(B)$$
2
GATE CSE 2023
Numerical
+1
-0.33

The value of the definite integral

$$\int\limits_{ - 3}^3 {\int\limits_{ - 2}^2 {\int\limits_{ - 1}^1 {(4{x^2}y - {z^3})dz\,dy\,dx} } } $$

is ___________. (Rounded off to the nearest integer)

Your input ____
3
GATE CSE 2023
MCQ (More than One Correct Answer)
+2
-0.67

Let X be a set and 2$$^X$$ denote the powerset of X. Define a binary operation $$\Delta$$ on 2$$^X$$ as follows:

$$A\Delta B=(A-B)\cup(B-A)$$.

Let $$H=(2^X,\Delta)$$. Which of the following statements about H is/are correct?

A
H is a group.
B
Every element in H has an inverse, but H is NOT a group.
C
For every $$A\in2^X$$, the inverse of A is the complement of A.
D
For every $$A\in2^X$$, the inverse of A is A.
4
GATE CSE 2023
MCQ (More than One Correct Answer)
+2
-0.67

Consider a random experiment where two fair coins are tossed. Let A be the event that denotes HEAD on both the throws, B be the event that denotes HEAD on the first throw, and C be the event that denotes HEAD on the second throw. Which of the following statements is/are TRUE?

A
A and B are independent
B
A and C are independent
C
B and C are independent
D
Prob(B|C) = Prob(B)
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