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course mth 152
9/15 11
question 11.3.20 5 prizes among 25 students
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your Solution:
25 ! / ( (25 - 5) !) is P(25, 5)
3
Ok
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question: Is repetition allowed in this situation?
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your Solution:
5 different prizes, and you can't give the same one to two people so no it is not allowed
3
Ok
question 11.3.30 3-letter monogram all letters different
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your Solution:
25 * 24 = 600 possibilities
3
Ok
question 11.3.43 /& 42 divide 25 students into groups of 3,4,5,6,7. In how many ways can the students be grouped?
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your Solution:
25! / [ 3 ! * 4 ! * 5 ! * 6 ! * 7 ! ]
3
Ok
question 11.3.60. C(n,0)What is the value of C(n,0)? What is the value of C(8,0)?
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your Solution:
C(n, 0) = n ! / [ (n - 0) ! * 0 ! ] = n ! / ( n ! * 1) = 1
3
Ok
"
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