Answer
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Hint: For one person, invitation can be sent by 3 ways. So for $x$ persons, it can be sent in ${{3}^{x}}ways$.
Complete step by step solution:
Given, there are 3 servants.
So, one card can be sent by 3 servants, i.e. by 3 ways.
Let us understand this question by a smaller example where the number of cards is 3 and the number servants is 2. Let us draw a tree diagram for this situation.
Therefore, the number of ways \[=2\times 2\times 2={{2}^{3}}\].
Similarly, in the given question the number of cards to be sent out is 6 and the number of ways each card can be sent is 3.
Therefore, the total number of ways $=3\times 3\times 3\times 3\times 3\times 3$.
$\begin{align}
& ={{3}^{6}} \\
& =729 \\
\end{align}$
Therefore, the number of ways in which six invites can be sent out if we have 3 servants to do the job is ${{3}^{6}}\ or\ 729$.
Note: In questions like these, the best way to solve them is to think of a similar example with smaller numbers and then use the same approach for the given question.
Complete step by step solution:
Given, there are 3 servants.
So, one card can be sent by 3 servants, i.e. by 3 ways.
Let us understand this question by a smaller example where the number of cards is 3 and the number servants is 2. Let us draw a tree diagram for this situation.
Therefore, the number of ways \[=2\times 2\times 2={{2}^{3}}\].
Similarly, in the given question the number of cards to be sent out is 6 and the number of ways each card can be sent is 3.
Therefore, the total number of ways $=3\times 3\times 3\times 3\times 3\times 3$.
$\begin{align}
& ={{3}^{6}} \\
& =729 \\
\end{align}$
Therefore, the number of ways in which six invites can be sent out if we have 3 servants to do the job is ${{3}^{6}}\ or\ 729$.
Note: In questions like these, the best way to solve them is to think of a similar example with smaller numbers and then use the same approach for the given question.
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