Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1251 2011-08-23 16:24:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1192 is correct. Well done!
#1193. If
, then 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.
Offline
#1252 2011-08-23 16:58:08
- 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
#1253 2011-08-24 17:22:30
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1193 is correct. Good work!
#1194. If
, 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.
Offline
#1254 2011-08-24 17:48:37
- 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
#1255 2011-08-25 00:00:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1194 is correct. Excellent!
#1195. Sixty-five percent of a number is 21 less than four-fifth of that number. What is the number?
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
#1256 2011-08-25 00:24:36
- 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
#1257 2011-08-25 02:15:37
- 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
#1258 2011-08-25 02:53:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution is correct. Well done, bobbym!
#1196. 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.
Offline
#1259 2011-08-25 03:06:33
- 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
#1260 2011-08-25 08:14:07
- 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
#1261 2011-08-25 18:25:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution #1196 is correct. Neat job!
#1197. If the numerator of a fraction be increased by 15% and its denominator be diminished by 8 %, the value of the fraction is
. Find the original fraction.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
#1262 2011-08-25 19:14:16
- 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
#1263 2011-08-26 01:02:37
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1197 is correct. Well done!
#1198. The population of a town is 176,400. If it increases at the rate of 5% per annum, what would be its population 2 years hence? What was it 2 years ago?
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
#1264 2011-08-26 01:07:52
- 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
#1265 2011-08-26 04:57:10
- 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
#1266 2011-08-26 18:35:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi,
The first part of the solution #1198 is correct. Well done, anonimnystefy!
The solution (both parts) is correct. Excellent, bobbym!
#1199. When the price of a product was decreased by 10%, the number sold increased by 30%. What was the effect on the total revenue?
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
#1267 2011-08-26 18:38:43
- 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
#1268 2011-08-26 23:17:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1199 is correct. Excellent!
#1200. Raman's salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose?
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
#1269 2011-08-26 23:20:46
- 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
#1270 2011-08-27 02:08:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1200 is perfect. Well done!
#1201. If the radius of a circle is doubled, by what percent does its area increase?
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
#1271 2011-08-27 03:14:00
- 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
#1272 2011-08-27 04:12:43
- 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
#1273 2011-08-27 17:09:51
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1201 is correct. Neat job!
#1202. Find the average of the first nine prime 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.
Offline
#1274 2011-08-27 17:41:39
- 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
#1275 2011-08-28 00:42:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1202 is correct. Neat job!
#1203. Two concentric circles form a ring. The inner and outer circumferences of the ring are
meters and meters. Find the width of the ring. (Use ).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