1
GATE CSE 2005
MCQ (Single Correct Answer)
+1
-0.3
The determination of the matrix given below is $$$\left[ {\matrix{ 0 & 1 & 0 & 2 \cr { - 1} & 1 & 1 & 3 \cr 0 & 0 & 0 & 1 \cr 1 & { - 2} & 0 & 1 \cr } } \right]$$$
A
- 1
B
0
C
1
D
2
2
GATE CSE 2005
MCQ (Single Correct Answer)
+1
-0.3
The following is the Hasse diagram of the poset $$\left[ {\left\{ {a,b,c,d,e} \right\}, \prec } \right]$$

The poset is:

GATE CSE 2005 Discrete Mathematics - Set Theory & Algebra Question 39 English
A
not a lattice
B
a lattice but not a distributive lattice
C
a distributive lattice but not a Boolean algebra
D
a Boolean algebra
3
GATE CSE 2005
MCQ (Single Correct Answer)
+1
-0.3
Let $$f$$ be a function from a set $$A$$ to a set $$B$$, $$g$$ a function from $$B$$ to $$C$$, and $$h$$ a function from $$A$$ to $$C$$, such that $$h\left( a \right) = g\left( {f\left( a \right)} \right)$$ for all $$a \in A$$. Which of the following statements is always true for all such functions $$f$$ and $$g$$?
A
$$g$$ is onto $$ \Rightarrow $$ $$h$$ is onto
B
$$h$$ is onto $$ \Rightarrow $$$$f$$ is onto
C
$$h$$ is onto $$ \Rightarrow $$ $$g$$ is onto
D
$$h$$ is onto $$ \Rightarrow $$ $$f$$ and $$g$$ are onto
4
GATE CSE 2005
MCQ (Single Correct Answer)
+2
-0.6
Which one of the following graphs is NOT planar? GATE CSE 2005 Discrete Mathematics - Graph Theory Question 29 English
A
G1
B
G2
C
G3
D
G4
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