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#2526 2014-04-30 00:02:16

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

.

#1756.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2527 2014-04-30 00:09:02

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

Re: Oral puzzles

Hi ganesh;

In post # 2524 you have a = 50. That is why I am getting -2400 for question #1755


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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#2528 2014-04-30 01:17:14

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1756 is perfect. Neat job!

PS : I hope the working of the Problem #1755 helped you. I regret the clerical error in the problem.

#1757.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2529 2014-04-30 01:29:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

Re: Oral puzzles

Hi;

Yes, your explanation helped alot.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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#2530 2014-04-30 02:27:19

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

Thanks, bobbym!

The solution #1757 is perfect. Remarkable!

#1758.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2531 2014-04-30 02:41:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

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#2532 2014-04-30 10:01:58

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

Re: Oral puzzles

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#2533 2014-04-30 16:38:13

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym and ShivamS,

The solution #1758 is correct. Excellent, bobbym!

The solution #1757 is correct. Brilliant, ShivamS!

#1759. Find the square root of

.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2534 2014-05-01 01:33:27

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

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#2535 2014-05-01 04:13:01

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1759 is correct. Neat job!

#1760. Find the sum of all 3 digit natural numbers, which are divisible by 9.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2536 2014-05-01 04:44:59

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

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#2537 2014-05-01 07:59:12

ShivamS
Member
Registered: 2011-02-07
Posts: 3,648

Re: Oral puzzles

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#2538 2014-05-01 16:10:48

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym and ShivamS,

The solution #1760 is correct. Brilliant!

#1761. Find the sum of first 20 terms of the Arithmetic Progression in which 3[sup]rd[/sup] term is 7 and 7[sup]th[/sup] term is 2 more than three times its 3[sup]rd[/sup] term.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2539 2014-05-01 19:25:11

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

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#2540 2014-05-02 15:49:35

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1761 is correct. Stupendous!

#1762. Find the sum of all natural numbers between 300 and 500 which are divisible by 11.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2541 2014-05-02 19:49:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

Offline

#2542 2014-05-03 17:01:11

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1762 is perfect. Excellent!

#1763. Solve : 1 + 6 + 11 + 16 + ..... + x = 148.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#2543 2014-05-03 20:19:28

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

Offline

#2544 2014-05-04 17:06:16

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1763 is perfect. Excellent!

#1764. Find the sum of all numbers between 100 and 200 which are not divisible by 5.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#2545 2014-05-04 21:06:37

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

Offline

#2546 2014-05-04 23:58:40

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1764 is perfect. Remarkable!

#1765. Find the least perfect square number divisible by 3, 4, 5, 6 and 8.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#2547 2014-05-05 00:32:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

Offline

#2548 2014-05-05 17:29:00

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1765 is correct. Good work!

#1766. Find the least number by which 294 must be multiplied to make it a perfect square.


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

#2549 2014-05-05 19:13:38

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,262

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.
No great discovery was ever made without a bold guess.

Offline

#2550 2014-05-06 18:09:51

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,305

Re: Oral puzzles

Hi bobbym,

The solution #1766 is correct. Good work!

#1767. How many consecutive terms starting from the first term of the series 3 + 9 + 27 + ....would sum to 1092?


It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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