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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: 13,906

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?


Character is who you are when no one is looking.

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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: 13,906

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?


Character is who you are when no one is looking.

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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: 13,906

Re: Oral puzzles

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


Character is who you are when no one is looking.

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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: 13,906

Re: Oral puzzles

Well done, TheDude,
All answers correct!!!


Character is who you are when no one is looking.

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

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,906

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.


Character is who you are when no one is looking.

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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: 13,906

Re: Oral puzzles

Excellent, JohnnyReinB!!! All correct!!!

#433. Solve for x.


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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: 13,906

Re: Oral puzzles

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


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

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,906

Re: Oral puzzles

#435. Solve


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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: 13,906

Re: Oral puzzles

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


Character is who you are when no one is looking.

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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: 13,906

Re: Oral puzzles

No, you are not correct!


Character is who you are when no one is looking.

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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: 13,906

Re: Oral puzzles

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


Character is who you are when no one is looking.

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

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,906

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?


Character is who you are when no one is looking.

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

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,906

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?


Character is who you are when no one is looking.

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

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,906

Re: Oral puzzles

438. What is the value of

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


Character is who you are when no one is looking.

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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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