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jelianbuhisan
@jelianbuhisan
November 2022
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4. A box contains 10 tickets numbered 1 to 9 inclusive. If three tickets are drawn from the box one at a time without replacement, find the probability that they are alternately.
a. Odd, even, odd
b. Even, odd, even
correct answer plss
Answers & Comments
CruzGirlGwapa
Question:
There are 9 tickets with 4 even numbered tickets and 5 odd numbered tickets
A
n
s
w
e
r
:
a) odd, even, odd
Probability(P) (odd, even, odd) = (5/9), (4/8), (4/7) = 80/504 = 10/63 is approximately 0.16
b) even, odd, even
P (even, odd, even) = (4/9) * (5/8) * (3/7) = 60/504 = 10/84 = 5/42 is approximately 0.12
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1 votes
Thanks 1
jelianbuhisan
Correct option is C)
First find probability that the 3 tickets drawn are ( odd, even, odd )
jelianbuhisan
There are 9 tickets numbered 1 to 9
So, initially there are 5 odd numbered tickets and 4 even numbered.
jelianbuhisan
The probability that first ticket drawn is odd numbered =
9
5
jelianbuhisan
Now, the second ticket is drawn without replacement. There are 8 tickets in the box, out of which 4 are odd numbered and 4 are even.
jelianbuhisan
The probability that second ticket drawn is even numbered =
8
4
jelianbuhisan
The probability that the 3 tickets drawn are ( even, odd, even )
=
9
4
×
8
5
×
7
3
=
42
5
jelianbuhisan
Probability that the 3 tickets drawn are either ( even, odd, even ) or
( odd, even, odd ) =
63
10
+
42
5
=
18
5
CruzGirlGwapa
sorry po... Pwede pa braimliest nalang
CruzGirlGwapa
please lang ty
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Answers & Comments
Question:
There are 9 tickets with 4 even numbered tickets and 5 odd numbered tickets
Answer:
a) odd, even, odd
Probability(P) (odd, even, odd) = (5/9), (4/8), (4/7) = 80/504 = 10/63 is approximately 0.16
b) even, odd, even
P (even, odd, even) = (4/9) * (5/8) * (3/7) = 60/504 = 10/84 = 5/42 is approximately 0.12
Pa-brainliest po
#CARRYONLEARNING
First find probability that the 3 tickets drawn are ( odd, even, odd )
So, initially there are 5 odd numbered tickets and 4 even numbered.
9
5
8
4
=
9
4
×
8
5
×
7
3
=
42
5
( odd, even, odd ) =
63
10
+
42
5
=
18
5