Oral puzzles

SvenBee · 2008-05-22 18:28:21

Thank you very much!
:]

Jai Ganesh · 2008-05-22 23:36:43

#447. The area of an isosceles triangle is 192 cm² and the base of the triangle is 24 cm. Find its perimeter.

JohnnyReinB · 2008-05-23 03:02:23

Jai Ganesh · 2008-05-23 03:23:12

Answer to #447:
JohnnyReinB,

JaneFairfax · 2008-05-23 12:05:15

John E. Franklin · 2008-05-23 15:23:17

John E. Franklin · 2008-05-23 15:52:22

JaneFairfax · 2008-05-23 21:40:05

John E. Franklin wrote:

Yes, and I went thru all the ways the 3 people could have played against each other (or partially) instead of with the others, and then the numbers come out funny, and 75 is not attainable.

In case you didnt notice, I already answered that question above.

Iinitially there were 15 players, and it was planned to have 105 matches altogether. If the 3 players who pulled out had not joined in the first place, there would have been just 12 players and 66 matches. The 39 matches in the difference would have involved those 3 players (they break down into 3 matches against each other and the other 36 against the 12 who stayed in the competition). Only 9 of those 39 matches were played. So the total number of matches was 66 + 9 = 75.

Last edited by JaneFairfax (2008-05-24 00:38:25)

John E. Franklin · 2008-05-24 10:32:40

That's why I said "Yes", because I was agreeing with you.

John E. Franklin · 2008-05-24 10:58:51

The key phrase you missed and then thought I was disagreeing with you was:
"instead of with the others" because that is how it occurred. The 9 games were played with the other healthy ones, not mutually shared pre-sick contestant games, because the sharing of games creates fewer total games, but from each pre-sick persons point of view, they could count the games as originally stated in the problem asked by ganesh.

JaneFairfax · 2008-05-24 11:47:23

John E. Franklin wrote:

The 9 games were played with the other healthy ones, not mutually shared pre-sick contestant games, because the sharing of games creates fewer total games

What do you mean sharing of games creates fewer total games? Who told you such rubbish?

Jai Ganesh · 2008-05-24 19:09:31

#448. Anne and Michel each have goats. Michel says to Anne :"If you give me one of your goats, I will have double of what you will have remaining".
Anne replies :"If you give me one of your goats, we will have exactly the same number of goats". How many goats do Anne and Michel have?

#449. Two candles are the same length. Both are lit at the same time.
The first candle (#1) burns six hours before it extinguishes itself.
The second candle (#2) burns three hours before it extinguishes itself.
For how much time must candle #1 burn before it is twice the length of candle #2 ?

JaneFairfax · 2008-05-24 22:02:06

JohnnyReinB · 2008-05-24 22:48:37

Jai Ganesh · 2008-05-24 23:42:38

Answers to #448 and #449:
Both of you are correct, JaneFairfax and JohnnyReinB!!!

JaneFairfax · 2008-05-25 02:36:03

John E. Franklin · 2008-05-25 14:11:34

JaneFairfax wrote:

John E. Franklin wrote:
The 9 games were played with the other healthy ones, not mutually shared pre-sick contestant games, because the sharing of games creates fewer total games
What do you mean sharing of games creates fewer total games? Who told you such rubbish?

I'm sorry. I am sometimes very unclear.
I do agree with your 66 + 9 computation.
By all means I do.
I am just talking about the details
of how it occurred.
I was pointing out what did not occur, and
that which did not occur was any two
pre-sickly players playing against each other.
That's all. Hope that clears it up.

Jai Ganesh · 2008-05-29 02:52:30

#450. If E = 4(4!)+5(5!)+6(6!)+7(7!)+... 19(19!) + 20(20!), then what is the remainder when E is divided by 64?

JaneFairfax · 2008-05-29 03:21:17

Jai Ganesh · 2008-05-29 03:42:33

Answer to #450:
Perfectly right, JaneFairfax!
Neat Work!!!

JaneFairfax · 2008-05-29 10:29:29

Jai Ganesh · 2008-05-29 18:19:12

Answer to #438:
You are correct, Janefairfax! Very good!

ZHero · 2008-06-12 14:15:34

The answer to QUESTION 10 can be...
( 11 ! ) ^ ( 11 ! )
thats 11 factorial raised to 11 factorial!!
But it can be extended to any number of factorials that one wishes to...
Question is INCOMPLETE i must say!?

JaneFairfax · 2008-06-13 00:01:50

Or it might even just be 1111 in base N, where N is any supergigantic positive integer you name.

Last edited by JaneFairfax (2009-01-03 14:34:41)

Jai Ganesh · 2009-01-10 02:21:25

#451.

.
What is the value of x?

#452.

#453. The volume of a cylinder is 4158 cm³. Its diameter is 21 cms. Find its total surface area.

#454. If the square root of 625 is 5, what is the value of

?

#455. What is the value of

?

Math Is Fun Forum

#251 2008-05-22 18:28:21

Re: Oral puzzles

#252 2008-05-22 23:36:43

Re: Oral puzzles

#253 2008-05-23 03:02:23

Re: Oral puzzles

#254 2008-05-23 03:23:12

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#255 2008-05-23 12:05:15

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#256 2008-05-23 15:23:17

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#257 2008-05-23 15:52:22

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#258 2008-05-23 21:40:05

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#259 2008-05-24 10:32:40

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#260 2008-05-24 10:58:51

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#261 2008-05-24 11:47:23

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#262 2008-05-24 19:09:31

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#263 2008-05-24 22:02:06

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#264 2008-05-24 22:48:37

Re: Oral puzzles

#265 2008-05-24 23:42:38

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#266 2008-05-25 02:36:03

Re: Oral puzzles

#267 2008-05-25 14:11:34

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#268 2008-05-29 02:52:30

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#269 2008-05-29 03:21:17

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#270 2008-05-29 03:42:33

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#271 2008-05-29 10:29:29

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#272 2008-05-29 18:19:12

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#273 2008-06-12 14:15:34

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#274 2008-06-13 00:01:50

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#275 2009-01-10 02:21:25

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