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#4501 2016-02-18 00:56:37
- Relentless
- Member
- Registered: 2015-12-15
- Posts: 631
Re: Oral puzzles
Oh I see. You wanted the population sd
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#4502 2016-02-18 06:03:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#4503 2016-02-18 16:57:12
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym,
The solution #2745 is correct! Good work!
#2746. Sum of two numbers is 24 and sum of their reciprocals is
. Find the numbers.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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#4504 2016-02-19 15:22:29
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#4505 2016-02-19 17:55:51
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym,
The solution #2746 is correct! Neat work!
#2747. A bag contains 10 white, 5 black, 3 green, and 2 red balls. One ball is drawn at random. Find the probability that the ball is white or black or green.
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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#4506 2016-02-19 18:14:42
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#4507 2016-02-19 19:00:33
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi math9maniac,
The solution #2747 is correct! Magnificent!
#2748. Calculate the Standard Deviation of the following:
38, 40, 34, 31, 28, 26, 34.
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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#4508 2016-02-20 02:16:52
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#4509 2016-02-20 09:20:17
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#4510 2016-02-20 17:08:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym and math9maniac,
The solution #2748 is correct! Excellent!
#2749. A black die and a white die are thrown at the same time. Write all the possible outcomes. What is the probability?
(i) that the sum of the two numbers that turn up is 8?
(ii) of obtaining a total of 6?
(iii) of obtaining a total of 10?
(iv) of obtaining the same number on both dice?
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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#4511 2016-02-20 19:19:42
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#4512 2016-02-20 21:58:57
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#4513 2016-02-20 23:23:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym and math9maniac,
The solution #2749 (four parts) is correct! Marvelous!
#2750. Find the sum of the following Arithmetic Progressions:
(i) 50, 46, 42, ... to 10 terms.
(ii) 1, 3, 5, 7, ... to 12 terms.
(iii) 41, 36, 31, ..... to 12 terms.
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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#4514 2016-02-20 23:35:59
- math9maniac
- Member
- From: Tema
- Registered: 2015-03-30
- Posts: 443
Re: Oral puzzles
Only a friend tells you your face is dirty.
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#4515 2016-02-21 02:45:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#4516 2016-02-21 17:28:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi math9maniac and bobbym,
The solution #2750 is correct (three parts). Excellent!
#2751. The sum of the radii of two circles is 140 cm and the difference of their circumferences is 88 cm. Find the diameters of the circles.
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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#4517 2016-02-22 01:58:34
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#4518 2016-02-22 17:21:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym,
The solution #2751 is correct! Keep it up!
#2752. If a square is inscribed in a circle, find the ratio of the areas of the circle and the square.
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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#4519 2016-02-22 19:32:10
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
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#4520 2016-02-23 00:05:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym,
The solution #2752 is correct. Excellent!
#2753. Given that Greatest Common Divisor (306, 657) = 9, then find Least Common Multiple (306, 657).
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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#4521 2016-02-23 04:04:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#4522 2016-02-23 17:51:21
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym,
The solution #2753 is correct! Marvelous!
#2754. A rectangular courtyard is 18 m 72 cm long and 13 m 20 cm broad. It is to be paved with square tiles of the same size. Find the least possible number of such tiles.
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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#4523 2016-02-23 20:34:53
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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
#4524 2016-02-23 21:42:45
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,390
Re: Oral puzzles
Hi bobbym,
The solution #2754 is correct! Neat work!
#2755. If the polynomial
is divided by another polynomial , the remainder comes out to be ax + b, find a and 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.
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#4525 2016-02-24 01:02:16
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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