Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#351 2007-11-07 04:23:39
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: 10 second questions
Why did the vector cross the road?
It wanted to be normal.
Offline
#352 2007-11-08 18:17:05
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Solution to #295.
mathsy, you are correct, the same, alright. But isn't it the Reciprocal of the same???????
#296. Which is greater, a Googol or a Centillion?
#297. What is the difference between common logarithm and natural logarithm?
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
#353 2007-11-09 00:49:09
- Identity
- Member
- Registered: 2007-04-18
- Posts: 934
Re: 10 second questions
Offline
#354 2007-11-09 02:03:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Solutions to #296 and #297.
Neat work, Identity! You are correct, as often!
#298. What is MDCCCLXVIII?
#299. Is 299 a prime 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
#355 2007-11-09 02:30:53
- TheDude
- Member
- Registered: 2007-10-23
- Posts: 361
Re: 10 second questions
Last edited by TheDude (2007-11-09 02:47:59)
Wrap it in bacon
Offline
#356 2007-11-09 03:00:41
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Solutions to #298 and #299.
Dude, both your answers are correct. Good, you haven't stated why in your answers.
Keep up the good work
#300. What is 3000000000000000000000000000000/300?
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
#357 2007-11-09 23:05:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
#301. What is the area of the largest triangle that can be inscribed in a semi-circle of radius r?
#302. What is the perimeter of a square circumsribed about a circle of radius r?
#303. What is the edge of a cube whose total surface area is 384 square meters?
#304. The diameter of a wheel is 63 centimeters. What is the distance travelled by the wheel in 100 revolutions?
(Answers in centimeters or meters)
#305.The ratio of the radii of two circles is 1:3. What is the ratio of their 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.
Offline
#358 2007-11-10 00:39:36
- JohnnyReinB
- Member
- Registered: 2007-10-08
- Posts: 453
Re: 10 second questions
Sorry if all the answers are in question mark. I'm not sure in all of them since I only have a faint idea of how you answer these type of questions
(I'm only 13 years old and geometry is usually taught when you are 3rd year already, which is still two years away for me)
Last edited by JohnnyReinB (2007-11-22 17:06:19)
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" 
Nisi Quam Primum, Nequequam
Offline
#359 2007-11-10 01:24:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Solutions to #301 to #305
Very well done, JohnnyReinB.
All the solutions are perfectly correct.
This is a fanstastic performance for a 13 year old.
You don't have to worry about those question marks.
I don't think there's any trick or short-cut. I just try to remember the fundamental formulas and do it with sme calculations in the brain.
Very well done, JohnnyReinB!
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
#360 2007-11-10 02:05:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
#306. How many odd numbers of three digits can be formed if repetition is not allowed?
#307. How many even numbers of three digits can be formed out of the digits 1,2,3,4,5,6,7,8,9 if repetition of digits is not allowed?
#308. What is the coefficient of the middle term or middle 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.
Offline
#361 2007-11-11 17:37:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
#309. How much would #10,000 yield after two years when interest @10% per annum is compounded annually for two years?
#310. How much would an amount of $5,000 yield at Simple Interest when interest is given @10% per annum after 25 years?
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
#362 2007-11-16 23:18:55
- JohnnyReinB
- Member
- Registered: 2007-10-08
- Posts: 453
Re: 10 second questions
Last edited by JohnnyReinB (2007-11-18 22:12:40)
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"
Nisi Quam Primum, Nequequam
Offline
#363 2007-11-19 02:08:47
- TheDude
- Member
- Registered: 2007-10-23
- Posts: 361
Re: 10 second questions
Wrap it in bacon
Offline
#364 2007-11-20 04:07:29
- Kurre
- Member
- Registered: 2006-07-18
- Posts: 280
Re: 10 second questions
Last edited by Kurre (2007-11-20 05:31:27)
Offline
#365 2007-12-04 00:25:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Elegant answers indeed!
Keep up the good work!!!!!!!
#311. What is the value of a if
#312.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.
Offline
#366 2007-12-06 01:58:54
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
#313.
#314.
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
#367 2007-12-06 23:15:24
- JohnnyReinB
- Member
- Registered: 2007-10-08
- Posts: 453
Re: 10 second questions
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"
Nisi Quam Primum, Nequequam
Offline
#368 2007-12-07 02:25:58
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
No, JohnnyReinB. You are wrong this time!
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
#369 2007-12-07 03:34:34
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: 10 second questions
Why did the vector cross the road?
It wanted to be normal.
Offline
#370 2007-12-07 14:48:45
- JohnnyReinB
- Member
- Registered: 2007-10-08
- Posts: 453
Re: 10 second questions
What do you call those type of equations?
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"
Nisi Quam Primum, Nequequam
Offline
#371 2007-12-08 17:58:52
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Solutions to #313and #314.
Perfectly right,mathsyperson!!!
[color=008765]Well done![/color]
To JohnnyReinB,
These are monomials of degree 2 or 3,as the case may be.
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
#372 2007-12-08 18:06:48
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
#315.If a,b are the roots of the equation x²-3x+2=0,then the equation whose roots are(a+1),(b+1) is __________________.
#316. If a,b are the roots of the equation 2x²-5x+7=0,then the equation whose roots are (2a+3b) and (3a+2b) 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.
Offline
#373 2007-12-09 18:36:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
#317. What is the profit percebnt in a transaction in which I buy an article for $1000 and sell it for $1200?
#318. What is the Cost Price if I sell an article for $2200 and make a profit of 10% on the transaction?
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
#374 2007-12-10 01:37:07
- TheDude
- Member
- Registered: 2007-10-23
- Posts: 361
Re: 10 second questions
Cleaning up the older questions:
Wrap it in bacon
Offline
#375 2007-12-10 17:03:16
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
[color=008763]Correct, TheDude! Well done!!![/color]
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