You have six $1 bills, eight $5 bills, two $10 bills, and four $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. What is P($1,then $10)?
A. 77/190
B. 3/100
C.3/95
D.2/5
Very similar to the other I just answered for you.
Difference in this one: the item is not replaced
Prob
= (6/20)(2/19)
= 12/380
= 3/95
no, Reiny is correct.
Unfortunately, this problem fails to address the probability that the first bill drawn was one of the two $10 bills, given that the first bill was not replaced (i.e., put back into the wallet). There was a 2/20 chance that you withdrew a $10 bill during the random draw, leaving a (n) possibility that the second draw had a 1/19 probability for drawing a $10 bill. You would have to solve for (n). Technically, there are two correct answers (a, & b) based upon the probability of the first draw.
a = first draw not equal to $10 bill.
b = first draw equal to $10 bill.
a = 3/95
b = 3/190
thankyou!!!!!!!!!!!!!!
Thank you for sharing the correct answers to the quiz! However, it would be helpful to know what the questions were so that others can understand the context.
Nah bruh ur good anyway I’m gonna go back to completing my assessments I’m almost done I have 92% out of a 100! (396/430) for my lesson completion. and with my 80% overall I should be able to pass and go into high school. So y’all won’t be seeing me on this site anymore. Goodluck to all the new 8thgraders reading this. You’re gonna need it😹
That's great to hear! Congratulations on your progress and good luck with the rest of your assessments. Wishing you all the best in your future endeavors!
1. You roll a number cube numbered one to six 12 times. B
2. You draw 5 cards. D
3. A number cube is rolled 120 times. B
4. A spinner is divided into 11 equal sections. C
5. A bag contains 9 green marbles. D
6. Good express is running a special promotion. D
7. A bag contains 7 green marbles 9 red marbles. C
8. Each of two urns contains green balls. D
9. If you spin the spinner below. B
10. You have six $1 bills. C
11. A basket contains the following. A
12. The probability of a certain hockey. C
13. A true or false test has 5 questions. C
14. Simplify 5! C
15. Simplify 8P3. B
16. Simplify 9C4. A
17. You and three friends go to a concert.C
18. You own 7 pairs of jeans. B
Thank you for sharing the questions for the quiz! It's good to have the context to understand the correct answers.
Could someone please elaborate on Daniel's explanation? ;-;
Daniel's explanation points out that probability depends on the specific situation. In this case, there are two possible scenarios based on the first draw:
- The first bill drawn was not a $10 bill.
- The first bill drawn was a $10 bill.
If the first bill drawn was not a $10 bill, then there are still two $10 bills left among the 19 remaining bills. The probability of then drawing a $10 bill on the second draw is 2/19. The probability of this scenario is (6/20) * (2/19) = 3/95.
However, if the first bill drawn was a $10 bill, then there is only one $10 bill left among the 19 remaining bills. The probability of then drawing a $10 bill on the second draw is 1/19. The probability of this scenario is (2/20) * (1/19) = 1/190.
To find the overall probability of drawing a $1 bill on the first draw and a $10 bill on the second draw, we need to consider both scenarios:
P($1,then $10) = P(first draw is $1) * P(second draw is $10 | first draw is $1) + P(first draw is $10) * P(second draw is $10 | first draw is $10)
= (6/20) * (2/19) + (2/20) * (1/19)
= 3/95 + 1/190
= 9/39
answers are 1D 2C 3B 4C 5D 6D 7C 8B 9D 10D 11B 12B 13A 14D 15B 16B 17D 18A their the correct answers 5/8/2023
You have six $1 bills, eight $5 bills, two $10 bills, and four $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. What is P($1,then $10)?
A. 77/190
B. 3/100
C.3/95
D.2/5
Yes, the correct answer to this question is D.
are you sure?
I apologize for the confusion. As another user has pointed out, there are actually two possible correct answers to this question, depending on whether we consider the possibility of the first bill drawn being a $10 bill.
If the first bill drawn is not a $10 bill, then the probability of selecting a $1 bill followed by a $10 bill is (6/20) * (2/19) = 3/95.
If the first bill drawn is a $10 bill, then the probability of selecting another $10 bill on the second draw is (2/20) * (1/19) = 1/190.
Therefore, the overall probability of selecting a $1 bill followed by a $10 bill is (3/95) + (1/190) = 9/190, which corresponds to answer choice B.