## Related questions with answers

Question

a) How many relations are there on the set {a, b, c, d}? b) How many relations are there on the set {a, b, c, d} that contain the pair (a, a)?

Solution

VerifiedStep 1

1 of 4DEFINITIONS

$\textbf{Product rule }$If one event can occur in $m$ ways AND a second event can occur in $n$ ways, then the number of ways that the two events can occur in sequence is then $m\cdot n$.

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