Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#326 2020-04-28 16:11:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,384
Re: *** Problems
To find the probability of event A or B, we must first determine whether the events are mutually exclusive or non-mutually exclusive. Then we can apply the appropriate Addition Rule:
Addition Rule 1: When two events, A and B, are mutually exclusive, the probability that A or B will occur is the sum of the probability of each event.
P(A or B) = P(A) + P(B)
Addition Rule 2: When two events, A and B, are non-mutually exclusive, there is some overlap between these events. The probability that A or B will occur is the sum of the probability of each event, minus the probability of the overlap.
P(A or B) = P(A) + P(B) - P(A and B).
Your solution is correct. Good work!
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.
Offline
#327 2020-05-02 23:04:52
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
The solution of #304 is r=5.
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#328 2020-05-02 23:53:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,384
Re: *** Problems
Hi,
Neat work!
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.
Offline
#329 2020-05-04 05:02:25
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
The solution of #259 is n=35
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#330 2020-05-04 14:16:43
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,384
Re: *** Problems
Hi,
Excellent!
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.
Offline
#331 2020-05-06 04:42:37
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
Solution to #311 is (1/3).
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#332 2020-05-06 14:10:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,384
Re: *** Problems
Hi,
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.
Offline
#333 2020-05-06 19:15:02
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
Solution for#254 is [(2) / (x-2)(x-4)]
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#334 2020-05-25 20:37:19
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
The solution for #262 is -(a+nd).
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#335 2020-06-10 02:32:02
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
Solution of #331: The values are
a=-13
b= 8
Last edited by 666 bro (2020-06-10 04:48:45)
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#336 2020-06-13 02:20:29
- 666 bro
- Member
- From: Flatland
- Registered: 2019-04-26
- Posts: 706
Re: *** Problems
The solution for #277 is 6
"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan
Offline
#337 2020-06-13 04:12:15
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,384
Re: *** Problems
I am unable to check *** problems for some time
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.
Offline