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#2251 2012-10-28 22:52:54

bobbym
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Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2252 2012-10-29 20:12:20

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,



#1628. What is log327?


Character is who you are when no one is looking.
 

#2253 2012-10-29 20:13:51

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
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
 

#2254 2012-10-29 23:02:25

ganesh
Moderator

Online

Re: Oral puzzles

Hi anonimnystefy,

The solution #1628 is correct. Neat job!

#1629. Evaluate : log100(0.01)


Character is who you are when no one is looking.
 

#2255 2012-10-29 23:33:23

bobbym
Administrator

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Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2256 2012-10-30 20:39:58

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,

The solution #1629 is correct. Excellent!

#1630. If log 27 = 1.431, then what is the value of log 9?


Character is who you are when no one is looking.
 

#2257 2012-10-30 20:44:42

bobbym
Administrator

Offline

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2258 2012-10-31 21:13:19

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,

The solution #1630 I get is



#1631. If log 102 = 0.3010, then what is the value of log 2 10?


Character is who you are when no one is looking.
 

#2259 2012-10-31 21:19:09

anonimnystefy
Real Member

Offline

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
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
 

#2260 2012-10-31 21:39:03

bobbym
Administrator

Offline

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2261 2012-11-02 15:58:47

ganesh
Moderator

Online

Re: Oral puzzles

Hi anonimnystefy and bobbym,

The solution #1631 is correct. Good work!

#1632. If log 2 = 0.3010 and log 3 = 0.4771, then what is the value of log5512?


Character is who you are when no one is looking.
 

#2262 2012-11-02 18:04:39

bobbym
Administrator

Offline

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2263 2012-11-03 17:49:01

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,

The solution #1632 is correct. Neat job!

#1633. If log 2 = 0.30103 find the number of digits in 450.


Character is who you are when no one is looking.
 

#2264 2012-11-03 22:23:33

bobbym
Administrator

Offline

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2265 2012-11-04 00:44:47

anonimnystefy
Real Member

Offline

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
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
 

#2266 2012-11-04 17:08:30

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym and anonimnystefy,

The solution is



Neat work, bobbym!

#1634. If log 2 = 0.30103, find the number of digits of 520.


Character is who you are when no one is looking.
 

#2267 2012-11-04 20:15:31

bobbym
Administrator

Offline

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2268 2012-11-05 16:57:44

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,

The solution #1634 is correct. Neat work!

#1635. Evaluate :
(i) log71
(ii) log3434
(iii)


Character is who you are when no one is looking.
 

#2269 2012-11-05 18:01:47

bobbym
Administrator

Offline

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2270 2012-11-06 17:48:06

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,

The solutions (all the three parts) are correct. Good work!

#1636. The speed of a boat in still water in 11 kilometers per hour and the rate of current is 4 kilometers per hour. Find the distance traveled downstream in 16 minutes.


Character is who you are when no one is looking.
 

#2271 2012-11-06 19:14:53

bobbym
Administrator

Offline

Re: Oral puzzles

Hi;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2272 2012-11-07 16:41:32

ganesh
Moderator

Online

Re: Oral puzzles

Hi bobbym,

The solution #1636 is perfect. Neat job!

#1637. A cistern is filled by pipe A is 9 hours and the cistern can be leaked out by an exhaust pipe B in 10 hours. If both the pipes are opened, in what time would the istern be full?


Character is who you are when no one is looking.
 

#2273 2012-11-07 16:48:40

anonimnystefy
Real Member

Offline

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
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
 

#2274 2012-11-07 19:29:11

bobbym
Administrator

Offline

Re: Oral puzzles

Hi ganesh;


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#2275 2012-11-08 17:53:22

ganesh
Moderator

Online

Re: Oral puzzles

Hi anonimnystefy and bobbym,

The solution #1637 is correct. Good work!

#1638. Taps A and B can fill a bucket in 10 minutes and 15 minutes respectively. If both pipes are opened and A is closed after 3 minutes, how much further time would it take for B to fill the bucket?


Character is who you are when no one is looking.
 

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