Consider a regular 52-card deck of playing cards. Suppose two cards are drawn at random from the deck without replacement. (Ente
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ANSWER
EXPLANATION
From the table,
There is a constant difference of
The sequence is therefore an arithmetic progression.
The general formula for the arithmetic progression is
We substitute the values into the formula to obtain,
We expand the bracket to obtain,
This simplifies to
EXPLANATION
From the table,
There is a constant difference of
The sequence is therefore an arithmetic progression.
The general formula for the arithmetic progression is
We substitute the values into the formula to obtain,
We expand the bracket to obtain,
This simplifies to
