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#3451 2015-02-16 21:11:03
- 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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#3452 2015-02-17 00:14:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2215 is correct. Excellent!
#2216. A die is thrown twice. Find the probability of getting a total of 9.
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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#3453 2015-02-17 05:02:46
- 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
#3454 2015-02-17 15:31:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2216 is correct. Perfect!
#2217. Find the equation of the straight line passing through the point (-2,3) with slope
.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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#3455 2015-02-17 17:02:52
- 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.
Offline
#3456 2015-02-17 21:25:47
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2217 is correct. Neat job!
#2218. Evaluate:
.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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#3457 2015-02-18 16:54:21
- 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
#3458 2015-02-18 17:46:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2218 is correct. Good work!
#2219. 20 cards are numbered from 1 to 20. One card is drawn at random. What is the probability of a number on the card is a multiple of 4?
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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#3459 2015-02-18 17:52:04
- 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
#3460 2015-02-19 00:20:17
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2219 is correct. Good work!
#2220. Find the number of terms in the series : 5 + 11 + 17 + ..... + 95.
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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#3461 2015-02-19 05:26:36
- 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
#3462 2015-02-19 15:02:02
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2220 is correct. Neat work!
#2221. Let U = {4, 8, 12, 16, 20, 24, 28}, A = {8, 16, 24} and B = {4, 16, 20, 28}. Find
(i)
and (ii) .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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#3463 2015-02-19 21:27:04
- 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
#3464 2015-02-20 00:07:30
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
.
#2222.Find the mid-pint of the line joining (a, -b) and (3a, 5b).
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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#3465 2015-02-20 15:05:05
- 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
#3466 2015-02-20 17:06:45
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2222 is correct. Well done!
#2223. Three dice are thrown simultaneously. Find the probability of getting the same number of all the three 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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#3467 2015-02-20 18:54:44
- 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
#3468 2015-02-21 02:03:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2223 is correct. Good work!
#2224 If
are the roots of the equation form a quadratic equation whose roots are and .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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#3469 2015-02-21 15:57:57
- 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
#3470 2015-02-21 16:56:20
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
#2225. Find the equation of the perpendicular bisector of the straight line joining the points (3,4) and (-1,2).
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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#3471 2015-02-21 17:23:23
- 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
#3472 2015-02-21 18:48:49
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2225 is correct. Brilliant!
#2226. The coordinates of the mid-point of the line segment joining the points (2a + 2, 3) and (4, 2b+1) are 2a, 2b). Find the values of 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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#3473 2015-02-22 17:15:57
- 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
#3474 2015-02-22 17:53:21
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 46,277
Re: Oral puzzles
Hi bobbym,
The solution #2226 is perfect. Brilliant!
#2227. The ramp for unloading a moving truck has as angle of elevation of 30 degrees. If the top of the ramp is 0.9 meter above the ground level, find the length of the ramp post.
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
#3475 2015-02-23 11:50:23
- 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