A person wants to send a invitation card to seven friends and he can appoint one of three different persons to carry the invitation card. Then the number of ways in which he can send the card is

2187

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Solution

The correct option is A $2187$
The number of ways in which a card can be sent to one friend $= 3$
The number of ways in which a card can be sent to all seven friends $= 3 \times 3 \times 3 \times 3 \times 3 \times 3 \times 3 = 3^{7}$
$= 2187$

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A person wants to send a invitation card to seven friends and he can appoint one of three different persons to carry the invitation card. Then the number of ways in which he can send the card is

The correct option is A 2187The number of ways in which a card can be sent to one friend =3 The number of ways in which a card can be sent to all seven friends=3×3×3×3×3×3×3=37 =2187

The correct option is A $2187$
The number of ways in which a card can be sent to one friend $= 3$
The number of ways in which a card can be sent to all seven friends $= 3 \times 3 \times 3 \times 3 \times 3 \times 3 \times 3 = 3^{7}$
$= 2187$