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#5601 2017-11-17 21:36:59
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3834 is correct. Excellent, Monox D. I-Fly!
#3835. If the median of the data : 6, 7, x - 2, x, 17, 20 written in ascending order, is 16. Find the value of x.
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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#5602 2017-11-19 18:05:14
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3836. Find the median of the first 10 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.
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#5603 2017-11-19 21:24:48
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5604 2017-11-19 22:36:22
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3836 is correct. Excellent, Monox D. I-Fly!
#3837. If the mode of the data : 64, 60, 48, x, 43, 48, 43, 34, and 43 is 43, find the value of x + 3.
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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#5605 2017-11-23 00:31:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3838. If 35 is removed by the data : 30, 34, 35, 36, 37, 38, 39, 40, then them median decreases by how much?
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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#5606 2017-11-23 12:41:26
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5607 2017-11-23 13:51:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3838 is correct. Excellent, Monox D. I-Fly!
#3839. If the arithmetic mean of 7, 8, x, 11, 14 is x, find the value of x.
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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#5608 2017-11-25 00:27:14
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3840. If the mean of first n natural numbers is 15, find n.
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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#5609 2017-11-27 02:19:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3840. If the mode of the series exceeds by 12 then the mode the median by ______.
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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#5610 2017-11-29 00:36:55
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3841. If the Arithmetic Mean and Mode of a data are 24 and 12 respectively, find the median.
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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#5611 2017-11-30 14:08:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3842. If the difference of mode and median of a data is 24, then find the difference of median and mean.
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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#5612 2017-12-03 17:26:34
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3843. Find the value of n if the mean of first n natural numbers 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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#5613 2017-12-05 00:20:39
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3844. Calculate the mean of the following distribution:
x: 5 6 7 8 9
f : 4 8 14 11 3
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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#5614 2017-12-07 00:52:55
- Jai Ganesh
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- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3845. Solve:
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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#5615 2017-12-07 13:14:42
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5616 2017-12-07 13:57:06
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3845 is correct. Good work, Monox D. I-Fly!
#3846. A passenger train takes 3 hours less for a journey of 360 kilometers, if its speed is increased by 10 kilometers per hour from its usual speed. What is the usual speed?
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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#5617 2017-12-07 14:43:12
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
#5618 2017-12-07 15:32:11
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3846 is correct. Excellent, Monox D. I-Fly!
#3847. A fast train take one hour less than a slow train for a journey of 200 kilometers. If the speed of the slow train is 10 kilometers per hour than that of the fast train, find the speed of the two trains.
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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#5619 2017-12-07 18:19:07
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Last edited by Monox D. I-Fly (2017-12-07 18:19:26)
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5620 2017-12-07 18:39:56
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3847 (two parts) is correct. Excellent, Monox D. I-Fly!
#3848. An airplane takes 1 hour less for a journey of 1200 kilometers if its speed is increased by 100 kilometers per hour from its usual speed. Find its usual speed.
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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#5621 2017-12-09 00:22:14
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
#3849. The hypotenuse of a grassy land in the shape of a right triangle is 1 meter more than twice the shortest side. If the third side is 7 meters more than the shortest side, find the sides of the grassy land.
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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#5622 2017-12-10 12:53:33
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Last edited by Monox D. I-Fly (2017-12-10 12:54:03)
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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#5623 2017-12-10 15:34:55
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3849 (three values) is correct. Excellent, Monox D. I-Fly!
#3850. Find the values of k for which the quadratic equation
has real and equal roots.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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#5624 2017-12-10 17:32:59
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Oral puzzles
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
#5625 2017-12-10 18:43:40
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,421
Re: Oral puzzles
Hi,
The solution #3850 (two values) is correct. Keep it up, Monox D. I-Fly!
#3851. If one root of the equation
is 2, then find the other root.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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