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#951 2011-06-19 01:41:49
- 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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#952 2011-06-19 16:44:27
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1070 is correct. Brilliant!
#1071. 4 years ago, the ratio of the ages of A and B was 2:3 and 4 years hence, the ratio would be 5:7. Find their present ages.
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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#953 2011-06-19 17:59:38
- 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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#954 2011-06-19 20:24:55
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1071 is perfect. Well done!
#1072. The diagonal of a square is
cm. What is its perimeter?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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#955 2011-06-19 21:36:53
- 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
#956 2011-06-19 22:47:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1072 is perfect. Good work!
#1073. Find the value 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.
Online
#957 2011-06-19 22:53:15
- 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
#958 2011-06-19 23:44:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1073 is perfect. Neat job!
#1074.
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.
Online
#959 2011-06-20 00:13:26
- 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
#960 2011-06-20 16:34:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1074 is correct. Good work!
#1075. There are 9999 tickets bearing numbers 0001, 0002, ..... 9999. If one ticket is selected from these tickets at random, what is the probability that the number on the ticket would consist of all different digits?
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.
Online
#961 2011-06-20 17:29:31
- 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
#962 2011-06-21 04:31:56
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
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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#963 2011-06-22 02:12:54
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution 1075 is correct. Impeccable!
#1076. The perimeters of two squares are 40 cm and 32 cm. Find the perimeter of a third square whose area is equal to the difference of the areas of the two squares.
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.
Online
#964 2011-06-22 02:17:14
- 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
#965 2011-06-22 04:00:24
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
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.
Offline
#966 2011-06-22 17:02:59
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution 1076 is perfect. Good work!
#1077. Find the area of a triangle whose sides are 13 cm, 14 cm, and 15 cm.
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.
Online
#967 2011-06-22 19:14:01
- 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
#968 2011-06-22 19:39:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1077 I get is 84 square cm.
#1078. Find the area of a right angled triangle whose base is 12 cm and hypotenuse 13 cm.
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.
Online
#969 2011-06-22 19:46:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
I think you are correct. Looks like I made an arithmetic error.
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
#970 2011-06-23 19:58:08
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1078 is correct. Well done!
#1079.
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.
Online
#971 2011-06-23 20:12:22
- 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
#972 2011-06-24 17:41:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi bobbym,
The solution 1079 is correct. Superlative performance!
#1080. What is the value 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.
Online
#973 2011-06-24 23:05:54
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
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.
Offline
#974 2011-06-24 23:21:44
- 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
#975 2011-06-25 01:03:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,408
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution 1080 is correct. Good work!
#1081.
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.
Online