A photo album costs $10.49 before discount and tax.
1 answer:
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We will use the binomial coefficient formula to work out the answer
The formula is given by:
Where:
'n' is the total population or sample population
'r' is the number of pick
We have:
n = 20
r = 3
Substitute these values into the formula we have
Answer:
There are 1140 different ways of picking three winners out of 20 people
The formula is given by:
Where:
'n' is the total population or sample population
'r' is the number of pick
We have:
n = 20
r = 3
Substitute these values into the formula we have
Answer:
There are 1140 different ways of picking three winners out of 20 people