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#501 2011-01-10 00:47:58
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym,
The solution to 875 is correct. Well done!
#876. Find the point where the straight line
meets the x-axis.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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#502 2011-01-10 01:06:40
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi,
I come from a civilization which has given the world the number 0..
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#503 2011-01-10 09:27:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#504 2011-01-11 02:51:57
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi Howardroark and bobbym,
The solution to 876 is correct. Good work!
#877. The equation of the line passing through (3,1) and parallel to y-axis is _____________________.
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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#505 2011-01-11 08:53:54
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#506 2011-01-12 01:24:12
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym,
The solution to 877 is perfect. Well done!
#878. A solid lead sphere of radius 8 cm is made into a number of small spherical pellets each of radius 1 cm. How many such balls can be made?
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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#507 2011-01-12 04:39:55
- 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
#508 2011-01-13 00:50:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym,
The solution to 878 is perfect. Well done!
#879. The area of cross section of a cylinder is 22 sq.cm. If its height is 14 cm, then what is its volume in cm.cube.?
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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#509 2011-01-13 01:16:46
- gAr
- Member
- Registered: 2011-01-09
- Posts: 3,482
Re: Oral puzzles
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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#510 2011-01-13 01:33:35
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi gAr,
Welcome to the forum!
The solution to 879 is correct. Good work!
#880. The ratio of radii and the ratio of heights of two cylinders are 1:4. What is the ratio of their volumes?
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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#511 2011-01-13 01:46:47
- gAr
- Member
- Registered: 2011-01-09
- Posts: 3,482
Re: Oral puzzles
Thanks ganesh,
Last edited by gAr (2011-01-13 01:49:46)
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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#512 2011-01-13 05:16:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#513 2011-01-14 00:45:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi gAr and bobbym,
The solutions to 879 and 880 are perfect. Good work!
#881. The diameter of the base of two cones are equal. If their slant heights are in the ratio 5:4, what is the ratio of their curved surface areas?
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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#514 2011-01-14 10:18:29
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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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#515 2011-01-14 23:42:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym,
The solution to 881 is correct. Good work!
#882. The volume of a cylinder is 60 cubic cm. What is the volume of a cone whose height and radius are same as those of the cylinder?
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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#516 2011-01-15 00:31:02
- 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
#517 2011-01-15 00:31:20
- gAr
- Member
- Registered: 2011-01-09
- Posts: 3,482
Re: Oral puzzles
Hi,
Last edited by gAr (2011-01-15 00:32:02)
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
Offline
#518 2011-01-16 00:58:53
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym and gAr,
The solution to 882 is correct. Good work!
#883. What is the ratio of the total surface area of a solid hemisphere to the square of its radius?
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
#519 2011-01-16 01:07:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#520 2011-01-17 01:03:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym,
The solution to 883 is correct. Good work!
#884. The radius of a cylinder is 7 cm. If its height is 12 cm, then what is its volume (in terms of
)?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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#521 2011-01-17 01:12:32
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#522 2011-01-17 02:47:03
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi,
I come from a civilization which has given the world the number 0..
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#523 2011-01-18 00:56:55
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,383
Re: Oral puzzles
Hi bobbym and Howardroark,
The correct solution to 884 is
cubic cm.Well done, Howardroark! A slip, bobbym!
#885. The vertical height of a cone is 21 cm and its diameter of base is 40 cm. What is its slant height?
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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#524 2011-01-18 07:03:08
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
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
#525 2011-01-18 14:45:55
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi Ganesh,
I come from a civilization which has given the world the number 0..
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