# The Riddle Thread….

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• #1068974
oomis
Participant

Dr. Pepper, as always, a fountain of very interesting trivia. I never heard of this before. So if the quarter has no monetary value because it was dated differently, would they not then become a collectors’ item, and therefore MORE valuable?

#1068975
Dr. Pepper
Participant

oomis1105-

That’s why I specifically wrote “monetary value”, how much is it worth as money (if you were to bring it into the bank for example).

#1068976
anon for this
Participant

Dr. Pepper, the term “monetary value” doesn’t actually exclude the value of the coin as a collector’s item (since it generally indicates the money the item could be sold for). Although I understood your intent, it may have been more clear if you’d written “nominal value” or “face value”.

#1068977
potpie
Member

Oops, I added wrong! 16 cents!

#1068978
Dr. Pepper
Participant

There are four marbles of different colors: white, blue, red and green. You pick two with out replacement.

What are the chances of picking a non-green one in the first pick and a white one on the second pick?

#1068979
Kasha
Member

“What are the chances of picking a non-green one in the first pick”

75%

“a white one on the second pick?”

25% (75% chance you didn’t pick white on the first pick * 33.3% chance you pick white on the second pick.)

The probability of picking a non-green one in the first pick AND picking a white one on the second pick is .1875 or 3/16 (.75 * .25).

#1068981
Kasha
Member

Hmm, if I do it manually I come up with another figure:

.75 first choice is non-green

Assuming first choice is non-green, then probability of second choice being white is…

1/3 if first choice was either blue or red (2 possibilities)

0% if first choice was white (1 possibility)

(1/3 + 1/3 + 0)/3 = 2/9

.75 * 2/9 = 1/6

#1068982

Kasha-

You could also calculate 50% (eliminate all groups starting with white or green) * %33… (the red and blue groups that have white as the second choice).

#1068983
Kasha
Member

I can only try

So you agree with my second calculation.

#1068984

Kasha-

Yes, I agree.

Initially you left the “green group” in your second number which gave you 3/9 instead of 2/9. You subsequently corrected it.

#1068985
Dr. Pepper
Participant

I came across this question while helping a 5th grader do his homework. While the answer is clearly 1/6 (use the brute force method if necessary) I’m curious to know if this is what the teacher had in mind.

(The question before was exactly the same except that the first marble was reblaced after noting what color it was.)

#1068986
squeak
Participant

Dr. P-

The problem can be solved using a tree diagram, which is well within the capacity of a 5th grader to understand.

#1068987
Dr. Pepper
Participant

Depends on the 5th grader. The father who asked me to help his son couldn’t figure it out.

The topic itself was tree diagrams but I thought the question might have been tricky for a 5th grader who might not realize that the two events are not mutually exclusive.

#1068988
squeak
Participant

Sure, and some fifth graders can’t do multiplication without a calculator either. Neither can some of their fathers. My point was only that the problem is reasonable for 5th grade level math.

In general, it is useful to have some tricky applications of skills learned. It challenges students to apply learning on their own and it helps educators make assessments of ability.

#1068989

What Is So Rare…

answers to the clues below all contain the letters J-U-N in sequence

1) The second of the same name.

2) Twain’s villainous Native American.

3) A type of boat.

4) An overgrown tropical area.

5) A promotional trip.

6) A point in time.

7) A type of evergreen.

8) An assistant.

9) A key automobile component.

#1068990

2. injun joe

9. enjun

#1068991
Member

4-jungle

6-junction

#1068992
oomis
Participant

What Is So Rare…

answers to the clues below all contain the letters J-U-N in sequence

1) The second of the same name. Junior

2) Twain’s villainous Native American. Injun Joe

3) A type of boat.

4) An overgrown tropical area. jungle

5) A promotional trip. junket?

6) A point in time. junction

7) A type of evergreen. juniper

8) An assistant. adjunct ?

9) A key automobile component.

#1068993
ronrsr
Member

1. Junior

3. Junk

5. Junket

7. Juniper

9.

#1068994
anon for this
Participant

1) junior

5) junket

6) juncture

7) juniper

Smartcookie’s answer for #6 reminded me of a clue for #10:

10) word that connects words, phrases, or clauses

#1068995
anon for this
Participant

sorry, #8 should have been “adjunct”, of course.

#1068996
oomis
Participant

conjunction?

#1068997

What Is So Rare… – answers

1) The second of the same name. Junior (oomis1105, ronrsr, anon for this)

2) Twain’s villainous Native American. Injun Joe (YW Moderator-80, oomis1105 [this answer also served as a clue for #9])

3) A type of boat. Junk (ronrsr)

4) An overgrown tropical area. Jungle (smartcookie, oomis1105)

5) A promotional trip. Junket (oomis1105, ronrsr, anon for this)

6) A point in time. Juncture (anon for this [this was a tough one, easily confused with junction])

7) A type of evergreen. Juniper (oomis1105, ronrsr, anon for this)

8) An assistant. Adjunct (oomis1105, anon for this)

9) A key automobile component. Enjun (YW Moderator-80 )

#1068998

Injun Joe Junior (actually I.J. the sixth) was not like his father. He became an adjunct mechanic for a big outfit, specializing in enjun repair. One time he was taking a junk from the Amazon jungle on a junket that his company rewarded him with. At this juncture in time he was fortunate enough to see the famous ICOT Juniper tree on a deserted island that his ship passed on the way back to America.

#1068999
oomis
Participant

I would have said “enjun” but I was wracking my brains for a REAL answer about the car. NO FAIR!

#1069000
Member

Oomis same here. I was like enjun???? Guess next time we will speak up!!

#1069001

YW Moderator-80-

Not bad at all.

oomis1105-

…NO FAIR!

…I was like enjun????

Heh, heh, heh. <— evil chuckle

([almost] Sorry! ?)

#1069002
anon for this
Participant

oomis, that’s right.

#1069003
oomis
Participant

Funny thing is I answered “juncture” in my head to the question about a point in time (thinking, “at this juncture,”) but I still typed in junction, which I know is not correct. Pass the Ginko Biloba, please.

#1069004

When was that?

1) Pluto lost its planetary status.

a) 1999

b) 2004

c) 2006

2) The NYC subway system stopped accepting tokens.

a) 2003

b) 2005

c) 2006

3) Domain Google.com was registered.

a) 1995

b) 1997

c) 2000

4) The Dow Jones Average fell more than 20% in a single day.

a) 1987

b) 1990

c) 1991

a) 1994

b) 1995

c) 1996

6) Lyndon Johnson dies.

a) 1973

b) 1975

c) 1976

a) 1982

b) 1983

c) 1984

8) Pennsylvania Avenue closed to vehicular traffic (in front of the White House).

a) 1995

b) 1999

c) 2001

9) The Concorde is retired.

a) 2002

b) 2003

c) 2004

a) 1974

b) 1975

c) 1977

11) Menachem Begin resigns.

a) 1983

b) 1987

c) 1989

12) The Kursk is lost with all hands.

a) 1999

b) 2000

c) 2005

13) Brooklyn joins New York City.

a) 1895

b) 1898

c) 1900

14) Man first walks on the moon.

a) 1968

b) 1969

c) 1971

15) Man last walks on the moon.

a) 1972

b) 1973

c) 1974

Results:

#1069005

When was that? – Answers

1-c, 2-a, 3-b, 4-a, 5-c, 6-a, 7-c, 8-a, 9-b, 10-b, 11-a, 12-b, 13-b, 14-b, 15-a

#1069006
d a
Member

ICOT, I gave a paper with the “What Is So Rare…” questions to my Mother, and within 10 minutes she got all the answers.

(She said 9 wasn’t so fair!)

#1069007
Dr. Pepper
Participant

Why isn’t it fair? Both Air France and BA retired their fleet in 2003.

#1069008
d a
Member

Dr. Pepper, I was referring to What Is So Rare…, not When was that?.

9) A key automobile component. Enjun

Yes, my mother figured it out, but said its not a fair one!

#1069009

Alphabet Soup

RISE

_ _ _ _

_ _ _ _

_ _ _ _

FALL

Name four valid English words that can be made using all of the following letters: AEGLLRY

CALM

_ _ _ _

_ _ _ _

_ _ _ _

WILD

(no unfair ones. really. ??? )

#1069010
anon for this
Participant

allergy

largely

gallery

allegory works if you are allowed to add a letter but I suppose you aren’t

remuneration

#1069011

regally

#1069012
Dr. Pepper
Participant

RISE

RILE

FILE

FILL

FALL

CALM

CALL

WALL

WILL

WILD

#1069013

Alphabet Soup – answers

RISE

RILE

FILE

FILL (Dr. Pepper)

FALL

Name four valid English words that can be made using all of the following letters: AEGLLRY

allergy (anon for this)

largely (anon for this)

gallery (anon for this)

regally (YW Moderator-80)

Mountaineer

)

But remuneration uses an extra letter. -77

CALM

CALL

WALL

WILL (Dr. Pepper [who is a man of letters as well as numbers])

WILD

Gut Shabbos

#1069014
Dr. Pepper
Participant

I can only try-

I prefer to call them variables but thanks for the compliment.

#1069015

(is “them variables” anything like “them varmints”?)

#1069016

Name That Name

Rembrandt- first name

*(I didn’t know this one)

#1069017

YW Moderator-77-

But remuneration uses an extra letter.

That’s true, but I accidentally failed to specify that only the supplied letters could be used. Although a couple of “anon for this”s words weren’t what I had in mind, they fit the “rules” as given, so the review panel allowed them.

#1069018
WolfishMusings
Participant

Peter Lawrence

Denton True

Cody

New Amsterdam

New York Highlanders

Baltimore Orioles

It wasn’t International Business Machines?

(EDIT: After checking — I see it wasn’t).

George Herman

I don’t even know whom you’re referring to here.

The Wolf

#1069019

Name That Name – correction, addendum, and comment

Rembrandt – last name (Rembrandt was his first name)

For baseball fanatics only:

Dodgers’ – prior nickname, to honor the team’s newlyweds.

#1069020
WolfishMusings
Participant

Boston, Milwaukee

Jay

Paul

I always assumed it was Joe.

Redlegs

Bees

Louis Sockalexis

Dodgers’ – prior nickname, to honor the team’s newlyweds.

Bridegrooms

The Wolf

#1069021

Name That Name – answers

Rembrandt – last name van Rijn

For baseball fanatics only:

Dodgers’ – prior nickname, to honor the team’s newlyweds. Bridegrooms (WolfishMusings [Who would earn a 4.0 GPA if baseball was his major])

Gut chodesh.

#1069022
Dr. Pepper
Participant

A company has two new machines, the probability of either one breaking is uniformly distributed over 15 years (it has the same chance of breaking after half a year as it does after 15 years).

What is the probability of the two machines breaking within a year of each other?

Hint: It is easier to calculate the chances of them not breaking within a year of each other and subtracting that from 1.

#1069023
WolfishMusings
Participant

A company has two new machines, the probability of either one breaking is uniformly distributed over 15 years (it has the same chance of breaking after half a year as it does after 15 years).

If they break down, are they fixed and put back in circulation, or is that the end of the machine?

The Wolf

#1069024

Are they manufactured by the company that my office uses?

In that case I would say about 98% that they will both break down within the second year. (as soon as the warranty expires)

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