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GATE Overflow Test Series | Discrete Mathematics | Test 3 | Question: 5
Which of the following is NOT correct? (Mark all the appropriate choices) $(\mathbb{R^{\ast}},\times),$ the set of real numbers excluding $0$, under multiplication operation is a group. $(\mathbb{Q},\times),$ the set of rational ... $\{0, 1, \ldots, n-1\}$, under addition modulo $n$ operation is a group.
Which of the following is NOT correct? (Mark all the appropriate choices)$(\mathbb{R^{\ast}},\times),$ the set of real numbers excluding $0$, under multiplication operati...
206
views
commented
Nov 12, 2022
Set Theory & Algebra
go2025-dm-3
group-theory
multiple-selects
+
–
2
answers
2
GATE Overflow Test Series | Databases | Test 1 | Question: 24
Which of the following is a minimal cover of the set of functional dependencies $\{A \rightarrow BC, B \rightarrow CE, A \rightarrow E, AC \rightarrow H, D \rightarrow B \}?$ ... $\{A \rightarrow B,B \rightarrow C, B \rightarrow E, A \rightarrow H, D \rightarrow B \}$
Which of the following is a minimal cover of the set of functional dependencies $\{A \rightarrow BC,B \rightarrow CE,A \rightarrow E,AC \rightarrow H,D \rightarrow B \}?$...
543
views
commented
Oct 31, 2022
Databases
go2025-dbms-1
normal-forms
multiple-selects
+
–
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