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#201 2007-11-27 03:59:04

NullRoot
Member
Registered: 2007-11-19
Posts: 162

Re: Oral puzzles

If you have two numbers, A and B, then the percentage of B that is represented by A is: (A/B)*100

If the price of 12 pencils is x, and 1x is the profit he makes from 8x, then the percentage percentage profit is:
(1x/8x)*100

By rules of multiplication, 1x/8x = (1/8)*(x/x) = (1/8)*(1) = 1/8

So, his percentage profit is: (1/8)*100 = (0.125)*100 = 12.5%


Trillian: Five to one against and falling. Four to one against and falling… Three to one, two, one. Probability factor of one to one. We have normality. I repeat, we have normality. Anything you still can’t cope with is therefore your own problem.

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#202 2007-12-06 02:27:15

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

#426.The factorial  of  a  number  is always  less  than

. True or false?

#427. If the sum of internal angles of a polygon is 720° , what is the name of the polygon?


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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#203 2007-12-06 23:28:08

JohnnyReinB
Member
Registered: 2007-10-08
Posts: 453

Re: Oral puzzles


"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" wink

Nisi Quam Primum, Nequequam

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#204 2007-12-07 02:24:34

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

Correct, JohnnyReinB,
[color=ff0099]Well done![/color]

#428. If x+y=7 and xy=12, what is the value of x² +y² ?

#429. If x^(1/3)+y^(1/3)+z^(1/3)=0, then x+y+z=3xyz, True or False?


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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#205 2007-12-07 14:54:38

JohnnyReinB
Member
Registered: 2007-10-08
Posts: 453

Re: Oral puzzles


Have we Plutoins no hope?

Last edited by JohnnyReinB (2007-12-07 15:03:31)


"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" wink

Nisi Quam Primum, Nequequam

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#206 2007-12-07 17:09:35

pi man
Member
Registered: 2006-07-06
Posts: 251

Re: Oral puzzles

Quote from JohnnyReinB: "What happens if you raise a number to a fraction?"

x ^ (1/2) is the square root of X
x ^ (1/3) is the cube root of X
.
.
.

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#207 2007-12-09 18:27:54

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

#430. What is the side total of a magic square containing numbers from 1 to 49?


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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#208 2007-12-10 01:54:19

TheDude
Member
Registered: 2007-10-23
Posts: 361

Re: Oral puzzles


Wrap it in bacon

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#209 2007-12-10 17:09:37

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

Well done, TheDude,
All answers correct!!!


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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#210 2007-12-12 20:11:09

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

#431. If x=y=2z and xyz=256 then what is the value of x?

#432. Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank.


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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#211 2007-12-20 22:25:52

JohnnyReinB
Member
Registered: 2007-10-08
Posts: 453

Re: Oral puzzles




"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" wink

Nisi Quam Primum, Nequequam

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#212 2007-12-21 17:45:44

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

Excellent, JohnnyReinB!!! All correct!!!

#433. Solve for x.


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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#213 2007-12-22 04:54:44

NullRoot
Member
Registered: 2007-11-19
Posts: 162

Re: Oral puzzles


Trillian: Five to one against and falling. Four to one against and falling… Three to one, two, one. Probability factor of one to one. We have normality. I repeat, we have normality. Anything you still can’t cope with is therefore your own problem.

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#214 2007-12-22 17:11:02

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

Solution to #433.
Well done, NullRoot! You are correct!!!
#434. What is (a-x)(b-x)(c-x).......(z-x)?


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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#215 2007-12-23 17:46:27

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

#435. Solve


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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#216 2007-12-24 21:02:04

JohnnyReinB
Member
Registered: 2007-10-08
Posts: 453

Re: Oral puzzles

what do you mean by solving it?


"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" wink

Nisi Quam Primum, Nequequam

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#217 2007-12-24 21:14:34

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

Solve for x, that is get x in terms of a and b.


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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#218 2007-12-24 21:17:11

JohnnyReinB
Member
Registered: 2007-10-08
Posts: 453

Re: Oral puzzles

ok.


"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" wink

Nisi Quam Primum, Nequequam

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#219 2007-12-24 21:23:32

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

No, you are not correct!


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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#220 2007-12-27 00:50:32

TheDude
Member
Registered: 2007-10-23
Posts: 361

Re: Oral puzzles


Wrap it in bacon

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#221 2007-12-27 00:59:32

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

Excellent, TheDude!!!
Keep it up!!!


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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#222 2008-01-23 02:11:32

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

436. If the operation,^ is defined by the equation x ^ y = 2x + y, what is the value of a in
2 ^ a = a ^ 3?


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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#223 2008-01-24 01:43:58

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

437. A right circular cylinder and a sphere have the same volume and same radius. What is the ratio of their curved surfaces?


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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#224 2008-01-24 02:06:00

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,102

Re: Oral puzzles

438. What is the value of

?
(a) log 5
(b) -log 2
(c) 2 log 3
(d) 2 log 2


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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#225 2008-01-24 02:31:59

NullRoot
Member
Registered: 2007-11-19
Posts: 162

Re: Oral puzzles


Trillian: Five to one against and falling. Four to one against and falling… Three to one, two, one. Probability factor of one to one. We have normality. I repeat, we have normality. Anything you still can’t cope with is therefore your own problem.

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