Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#6051 2015-09-17 23:58:39
#6052 2015-09-18 01:06:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi zetafunc,
The solution #5511 is correct! Good work!
#5512. Find two consecutive numbers whose squares have the sum 85.
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
#6053 2015-09-18 01:12:53
#6054 2015-09-18 01:42:32
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#6055 2015-09-18 06:17:47
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: 10 second questions
Only a friend tells you your face is dirty.
Offline
#6056 2015-09-18 14:54:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi,
The solution #5512 is correct! Neat work, zetafunc, bobbym, and math9maniac!
#5513. A shopkeeper buys a number of books for $80. If he bought 4 more books for the same amount, each book would have cost $1 less. How many books did he buy?
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
#6057 2015-09-19 02:51:10
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#6058 2015-09-19 03:41:25
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: 10 second questions
Only a friend tells you your face is dirty.
Offline
#6059 2015-09-19 04:16:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi bobbym and math9maniac,
The solution #5513 s corret! Good work!
#5514. Find the distance between the points
(i) P (-6,7) and Q (-1,-5)
(ii) R ((a + b,a - b) and S (a - b,-a -b).
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
#6060 2015-09-19 04:29:56
#6061 2015-09-19 05:12:13
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#6062 2015-09-19 06:13:24
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: 10 second questions
Only a friend tells you your face is dirty.
Offline
#6063 2015-09-19 06:36:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi,
The solution #5514 (bpth parts) is correy! Excellent, zetafunc, bobbym, and math9maniac!
#5515. Evaluate :
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
#6064 2015-09-19 06:44:44
#6065 2015-09-19 07:18:21
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi zetafunc,
The solution #5515 is perfect! Neat work, zetafunc!
#5516. 17 cards numbered 1, 2, 3, 4, ......., 17 are put in a box and mixed thoroughly. One person draws a card from the box. find the probability that the number on the card is -
(i) odd
(ii) a prime
(iii) divusuble by 3
(iv) divsible by 3 and 2 both.
I am unwell, zetafunc! See you later! Good day to you!
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
#6066 2015-09-19 07:21:23
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: 10 second questions
Sorry, I just posted my answer for #5515 and realised the reply had come already. Thanks for your understanding.
Only a friend tells you your face is dirty.
Offline
#6067 2015-09-19 07:28:24
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: 10 second questions
Hi;
Sorry to hear you'reunder the weather. Wishing you a speedy recovery.
Last edited by math9maniac (2015-09-19 07:31:33)
Only a friend tells you your face is dirty.
Offline
#6068 2015-09-19 10:29:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#6069 2015-09-19 10:56:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi math9maniac,
The solutions #5515 and #5516 (all four parts) are correct! Excellent, math9maniac!
The solution #5516 (all four parts) is correct, bobbym! Excellent!
Thanks a lot for the wishes! I have been working overtime, math9maniac! Sunday may be a good break!
#5517. A die is thrown. Find the probability of getting
(i) a prime number
(ii) 2 or 4
(iii) a multiple of 2 or 3
(iv) an even prime number
(v) a number greater than 5
(vi) a number lying between 2 and 6.
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
#6070 2015-09-19 11:14:57
#6071 2015-09-19 12:41:54
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi zetafunc,
The solution #5517 is perfect! Marvelous!
(a niumber between 2 in 6 doesn't include 2 and 6, in my opinion. Therefore, 1/2 is right!
Since you have gives both options, you are right)
#5518. Evaluate:
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
#6072 2015-09-19 12:45:24
#6073 2015-09-19 14:32:51
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi zetafunc,
The solution #5519 is correct! Good work, zetafunc!
#5520. In each of the following, find the value of
:(i)
(ii) .
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
#6074 2015-09-19 23:07:13
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#6075 2015-09-20 08:44:59
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: 10 second questions
Hi bobbym,
The solution #5520 (both parts) is / are correct! Neat work!
#5521. Determine the positive values of 'k' for which the equations
and will both have real roots.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