Tag: discrete mathematics
Questions Related to discrete mathematics
The set of all real numbers under the usual multiplication operation is not a group since
$P\wedge (q \vee r)=(p\wedge q)\vee r$. This law is known as
If * is defined on the set R of all real numbers by $a*b=\sqrt{a^2+b^2}$, find the identity element in R with respect to *.
Subtraction of integers is an operation that is
If $A={6,7,8,9}$ and $B={0,1,3,4,5}$, then $A \cap B$ is
If $\displaystyle M\cup N=N\cup R$ and $\displaystyle M\cap N=N\cap R$ then which of the following is necessarily true?
A closed set with respect to some binary operation is called semi- group if
$"*"$ is said to be commutative in $A$ for all $a,b \epsilon A$
If $A \ast B = A \cap B$ on $P(X)$, then identify for $\ast$ is ________$(X \neq \phi)$
$\left( {p \Rightarrow q} \right) \to \left[ {\left( {r \vee p} \right) \Rightarrow \left( {r \vee q} \right)} \right]$ is