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#2451 2013-01-28 21:30:30

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#2452 2013-01-29 19:47:20

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1721 is perfect. Good work!

#1722. Simplify :

.


Character is who you are when no one is looking.

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#2453 2013-01-30 01:26:55

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#2454 2013-01-30 19:23:12

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1722 is perfect. Neat work!

#1723.


Character is who you are when no one is looking.

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#2455 2013-01-30 20:47:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#2456 2013-01-31 18:58:44

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1723 is perfect. Neat work!

#1724.


Character is who you are when no one is looking.

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#2457 2013-01-31 19:00:18

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,518

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

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#2458 2013-01-31 19:50:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#2459 2013-08-09 15:56:57

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: Oral puzzles

hello!

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#2460 2014-04-08 01:15:49

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi anonimnystefy, bobbym and Denominator,

The solution #1724 is correct. Marvelous!

#1725. The first term of an Arithmetic Progression is 6 and the common difference is 5. Find the Arithmetic Progression and its general term.


Character is who you are when no one is looking.

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#2461 2014-04-08 01:29:55

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#2462 2014-04-09 00:16:55

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1725 is correct. Neat work!

#1726. Find the common difference and 15[sup]th[/sup] term of the Arithmetic Progression 125, 120, 115, 110.....


Character is who you are when no one is looking.

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#2463 2014-04-09 03:49:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#2464 2014-04-10 00:06:19

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1726 is correct. Good work!

#1727. Which term of the arithmetic sequence

is
.


Character is who you are when no one is looking.

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#2465 2014-04-10 03:28:42

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

#2466 2014-04-10 23:44:09

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1727 is correct. Exellent!

#1728. Find the 12[sup]th[/sup] term of the Arithmetic Progression


Character is who you are when no one is looking.

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#2467 2014-04-11 01:00:57

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

#2468 2014-04-11 18:27:00

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1728 is perfect. Neat work!

#1729. Find the 17[sup]th[/sup] term of the Arithmetic Progression 4, 9, 14, ...


Character is who you are when no one is looking.

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#2469 2014-04-11 19:43:51

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

#2470 2014-04-12 17:29:57

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solution #1729 is correct! Splendid!

#1730. How many terms are there in the following Arithmetic Progression?


Character is who you are when no one is looking.

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#2471 2014-04-12 18:18:49

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

#2472 2014-04-13 00:56:55

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

I made a mistake in the problem #1730.

The corrected problem 'How many terms are there is the following Arithmetic Progression

'?

#1731. How many terms are there in the Arithmetic Progression 7, 13, 19, ......, 205?


Character is who you are when no one is looking.

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#2473 2014-04-13 02:28:43

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

#2474 2014-04-13 15:48:23

ganesh
Moderator
Registered: 2005-06-28
Posts: 14,367

Re: Oral puzzles

Hi bobbym,

The solutions #1730 and #1731 are correct. Marvelous!

#1732. The 10[sup]th[/sup]and 18[sup]th[/sup] terms of an Arithmetic Progression are 41 and 73 respectively. Find the 27[sup]th[/sup] term.


Character is who you are when no one is looking.

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#2475 2014-04-13 20:29:34

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,228

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

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