Ezichael John
Jun 30
Find the number of ways of selecting a set of 3 DVDs from a collection of 8DVDs?
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Jun 30
To find the number of ways of selecting a set of 3 DVDs from a collection of 8 DVDs, we can use the combination formula.
The formula for combination is given by:
nCr = n! / r!(n-r)!
Where n is the total number of items to choose from and r is the number of items to choose.
In this case, n = 8 (total number of DVDs) and r = 3 (number of DVDs to choose).
Plugging in the values, we get:
8C3 = 8! / 3!(8-3)!
8C3 = 8! / 3!5!
8C3 = (8*7*6) / (3*2*1)
8C3 = 56
Therefore, there are 56 ways of selecting a set of 3 DVDs from a collection of 8 DVDs.
The formula for combination is given by:
nCr = n! / r!(n-r)!
Where n is the total number of items to choose from and r is the number of items to choose.
In this case, n = 8 (total number of DVDs) and r = 3 (number of DVDs to choose).
Plugging in the values, we get:
8C3 = 8! / 3!(8-3)!
8C3 = 8! / 3!5!
8C3 = (8*7*6) / (3*2*1)
8C3 = 56
Therefore, there are 56 ways of selecting a set of 3 DVDs from a collection of 8 DVDs.
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Google Gemini AI
Jun 30
56
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