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#2326 2012-12-04 17:41:59
- ganesh
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Re: Oral puzzles
Hi bobbym,
The solution #1662 is correct. Good work!
#1663. Which term of the Arithmetic Progression 3, 8, 13, 18 ..... is 78?
Character is who you are when no one is looking.
#2327 2012-12-04 19:13:15
- bobbym
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Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2328 2012-12-05 17:19:42
- ganesh
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Re: Oral puzzles
Hi bobbym,
#1664. If the 3rd and the 9th terms of an Arithmetic Progression are 4 and -8 respectively, which term of this Arithmetic Progression is zero?
Character is who you are when no one is looking.
#2329 2012-12-05 17:26:32
- bobbym
- Administrator
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Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2330 2012-12-06 18:02:22
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1664 is correct. Neat work!
#1665. Two APs have the same common differences. The difference between their 100th terms is 100, what is the difference between their 1000th terms?
Character is who you are when no one is looking.
#2331 2012-12-06 19:48:29
- bobbym
- Administrator
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Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2332 2012-12-07 17:46:15
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1665 is perfect. Neat work!
#1666. For what value of n, are the nth terms of two Arithmetic Progression : 63, 65, 67, .... and 3, 10, 17, .... equal?
Character is who you are when no one is looking.
#2333 2012-12-07 18:16:30
- John E. Franklin
- Star Member
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Re: Oral puzzles
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#2334 2012-12-07 20:51:05
- bobbym
- Administrator
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Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2335 2012-12-08 18:13:07
- ganesh
- Moderator
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Re: Oral puzzles
Hi John E. Franklin and bobbym,
The solution #1666 is perfect. Neat job!
#1667. Determine the Arithmetic Progression whose third term is 16 and the 7th term exceeds the 5th term by 12.
Character is who you are when no one is looking.
#2336 2012-12-08 18:19:50
- anonimnystefy
- Real Member
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Re: Oral puzzles
Hi ganesh
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#2337 2012-12-08 20:14:36
- bobbym
- Administrator
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Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2338 2012-12-09 18:31:11
- ganesh
- Moderator
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Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1667 is correct. Good work!
#1668. Find the sum of the following Arithmetic Progression : 0.6, 1.7, 2.8, to 100 terms.
Character is who you are when no one is looking.
#2339 2012-12-09 19:58:27
- bobbym
- Administrator
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Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2340 2012-12-10 18:04:41
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1668 is perfect. Fabulous!
#1669. Find the sum of the Arithmetic Progression to 11 terms : 1/15, 1/12, 1/10, ......
Character is who you are when no one is looking.
#2341 2012-12-10 20:29:59
- bobbym
- Administrator
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Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2342 2012-12-11 18:37:37
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1669 is correct. Marvelous!
#1670. In an Arithmetic Progression, given a = 7, a13 = 35, find d and S13.
Character is who you are when no one is looking.
#2343 2012-12-11 18:44:21
- bobbym
- Administrator
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Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2344 2012-12-12 17:22:24
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1670 is correct. Good work!
#1671. In an Arithmetic Progression, given d = 5, S9 = 75, find a and a9.
Character is who you are when no one is looking.
#2345 2012-12-12 19:44:41
- bobbym
- Administrator
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Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2346 2012-12-13 17:59:20
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1671
#1672. The first and the last terms of an Arithmetic Progression are 17 and 350 respectively. If the common difference is 9, how many terms are there and what is their sum?
Character is who you are when no one is looking.
#2347 2012-12-13 18:28:28
- bobbym
- Administrator
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Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2348 2012-12-14 16:54:43
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1672 is correct. Brilliant!
#1673. If the sum of first 7 terms of an Arithmetic Progression is 49 and that of 17 terms is 289, find the sum of first n terms.
Character is who you are when no one is looking.
#2349 2012-12-14 19:53:27
- bobbym
- Administrator
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Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#2350 2012-12-15 20:56:27
- ganesh
- Moderator
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Re: Oral puzzles
Hi bobbym,
The solution #1673 is perfect. Good work!
#1674. Find the sum of the odd numbers between 0 and 50.
Character is who you are when no one is looking.