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#2576 2014-05-15 21:30:24

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#2577 2014-05-16 15:21:38

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1779 is correct.Good work!

#1780. Find the value of k if 1³ + 2³ + 3³ + 4³ + ........ + k³ = 6084.


Character is who you are when no one is looking.

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#2578 2014-05-16 15:41:16

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2579 2014-05-17 21:43:23

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1780 is correct. Brilliant!

#1781. Find the next term of the sequence


Character is who you are when no one is looking.

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#2580 2014-05-17 21:55:06

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2581 2014-05-17 23:06:34

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,918

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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#2582 2014-05-18 01:27:55

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym and anonimnystefy,

The solution #1781 is correct, bobbym and anonimnystefy! Good work!

#1782. If

are in Arithmetic Progression, then what is the value of
?


Character is who you are when no one is looking.

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#2583 2014-05-18 01:39:41

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2584 2014-05-18 18:27:14

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1782 is correct. Good work!

#1783. If k + 2, 4k - 6, 3k - 2 are the three consecutive terms of n Arithmetic Progression, then what is the value of k?


Character is who you are when no one is looking.

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#2585 2014-05-18 18:53:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2586 2014-05-19 02:19:06

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,918

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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#2587 2014-05-19 02:30:22

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym and anonimnystefy,

The solution #1783 is correct. Neat job, bobbym and anonimnystefy!

#1784. If the product of the first four consecutive terms of a Geometric Progression is 256 and if the common ratio is 4 and the first term is positive, then find its third term.


Character is who you are when no one is looking.

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#2588 2014-05-19 02:36:09

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2589 2014-05-19 17:54:21

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1784 is correct. Good work!

#1785. A geometric series consists of four terms and has a positive common ratio. The sum of the first two terms is 9 and the sum of the last two terms is 36. Find the series.


Character is who you are when no one is looking.

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#2590 2014-05-19 20:19:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2591 2014-05-20 02:33:41

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1785 is correct. Good work!

#1786 If

, x and y being positive whole numbers, then what are the values of x and y respectively?


Character is who you are when no one is looking.

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#2592 2014-05-20 02:39:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2593 2014-05-20 20:47:41

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solutions #1786 (two solutions) are perfect. Neat job!

#1787. What is the smallest number by which 3600 be divided to make it a perfect cube?


Character is who you are when no one is looking.

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#2594 2014-05-20 21:03:28

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2595 2014-05-21 02:44:44

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1787 is correct. Neat work!

#1788. Find the value of


.


Character is who you are when no one is looking.

Offline

#2596 2014-05-21 02:58:16

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2597 2014-05-22 00:55:16

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution#1788 is perfect. Remarkable!

#1789.


Character is who you are when no one is looking.

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#2598 2014-05-22 01:51:42

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#2599 2014-05-23 00:41:23

ganesh
Moderator
Registered: 2005-06-28
Posts: 16,450

Re: Oral puzzles

Hi bobbym,

The solution #1789 is correct. Fantastic performance!

#1790. Find the value of

.


Character is who you are when no one is looking.

Offline

#2600 2014-05-23 00:45:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 93,923

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

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