F. How many different sequences, each of length r, can be formed using elements
from A if
(a) elements in the sequence may be repeated?
(b) all elements in the sequence must be distinct?
Let the set consistss from distinct elements,
(a)
sequences, each of length can be formed using elements from if elements in the sequence may be repeated.
(b)
different sequences, each of length can be formed using elements from if all elements in the sequence must be distinct.
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