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#1501 2021-01-04 21:13:49
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Compute the solution:
Neat work!
838. A basket contains 5 red, 6 black, and 9 blue balls. If three balls are drawn simultaneously, find the probability of all three are of same color.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1502 2021-01-05 01:28:46
- Denominator
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- Registered: 2009-11-23
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Re: Compute the solution:
Hello ganesh,
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#1503 2021-01-05 03:05:31
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,422
Re: Compute the solution:
Hi,
.
Excellent!
839. A fruit basket contains 10 mangoes and 12 oranges out of which 3 oranges and 2 mangoes are bad. If two fruits are selected at random, find the probability of both are mangoes or both are good.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1504 2021-01-05 05:16:35
- irspow
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- Registered: 2005-11-24
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Re: Compute the solution:
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1505 2021-01-05 12:19:19
- anonimnystefy
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Re: Compute the solution:
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#1506 2021-01-05 13:12:31
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,422
Re: Compute the solution:
Hi irspow and anonimnystefy,
Excellent!
840. A bag contains 5 red and 6 black balls. Three balls are drawn one by one with replacement. What is the probability of all the three ball being black?
(ii) In the first part, if 3 balls are drawn one by one with replacement, find the probability of 2 balls being red and one ball being black.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1507 2021-01-06 07:02:49
- irspow
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- Registered: 2005-11-24
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Re: Compute the solution:
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1508 2021-01-06 13:21:26
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Compute the solution:
Excellent, irspow!
841. Five squares are chosen at random, in a chessboard. Find the probability of getting 3 are of one color and 2 of the other.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1509 2021-01-06 20:32:47
- 666 bro
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- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: Compute the solution:
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
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#1510 2021-01-06 23:28:32
- Jai Ganesh
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Re: Compute the solution:
Keep trying!
842. A number is selected at random, between 100 - 999 (both included). Find the probability of it being an even number with no digit repeated.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1511 2021-01-07 05:06:03
- irspow
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- Registered: 2005-11-24
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Re: Compute the solution:
Hey Ganesh, 841 & 842 both had me completely stumped. Would you please show the method of solution for them when you post the solution. I assume they are rather simple combinations and/or permutations, but I am having trouble figuring out how to recognize which are the correct applications for these problems. 
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1512 2021-01-07 13:20:05
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Compute the solution:
Hi,
Hope it helps!
843. Find the probability of all the Is coming together in the word SIMPLICITY.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1513 2021-01-08 06:14:14
- irspow
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Re: Compute the solution:
Thanks for showing your work, you are awesome. 
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1514 2021-01-08 13:48:01
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Compute the solution:
Hi,
My pleasure, irspow!
Neat work!
844. A five digit is formed using the digits from 1 to 9 without repetition. Find the probability of the number being divisible by 5.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1515 2021-01-08 17:18:46
- 666 bro
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- From: Flatland
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- Posts: 706
Re: Compute the solution:
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
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#1516 2021-01-08 22:37:56
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,422
Re: Compute the solution:
Neat work!
845. A bag contains 5 red and 3 black balls. Another bag contains 3 red and 5 black balls. If a ball is drawn from each bag, find the probability of both being red.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1517 2021-01-09 05:14:42
- irspow
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- Registered: 2005-11-24
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Re: Compute the solution:
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1518 2021-01-09 14:54:51
- Jai Ganesh
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- Registered: 2005-06-28
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Re: Compute the solution:
Neat work!
846. Find the probability of getting a 3, when two dice are rolled together, given that sum of the digits on the top faces of the two dice is 8.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1519 2021-01-10 03:44:29
- irspow
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- Registered: 2005-11-24
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Re: Compute the solution:
Last edited by irspow (2021-01-10 03:45:27)
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1520 2021-01-10 13:46:05
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,422
Re: Compute the solution:
Neat work!
847. Three numbered cards are selected at random, with replacement from a pack of cards numbered 10 - 20. Find the probability of 2 odd numbered cards and 1 even numbered card being selected.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1521 2021-01-11 03:30:19
- irspow
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- Registered: 2005-11-24
- Posts: 1,055
Re: Compute the solution:
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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#1522 2021-01-11 14:23:14
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,422
Re: Compute the solution:
Excellent!
848. Five travelers seep accommodation in 7 hotels in a city. Find the probability of all the five persons stay in a different hotel
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1523 2021-01-11 15:50:11
- Denominator
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- Registered: 2009-11-23
- Posts: 220
Re: Compute the solution:
Hello,
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#1524 2021-01-11 23:43:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Compute the solution:
Hi,
Excellent, Denominator!
849. Five sweets are distributed among five children. Find the probability of at least one of them does not get any sweet.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#1525 2021-01-13 23:18:50
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: Compute the solution:
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
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