+0

# Puzzles

+33
1924
23
+112008
Postby Melody » Mon Feb 10, 2014 10:20 pm

Magic number Puzzle
http://web2.0calc.com/questions/number-challenge-for-everyone-1

reinout-g's logic puzzles
http://web2.0calc.com/questions/logic-s-puzzle

1994 problem
http://web2.0calc.com/questions/1994-problem-posted-by-grmal

reinout-g's probabiliy puzzles
http://web2.0calc.com/questions/probability-puzzles

Printable puzzles on the web
http://web2.0calc.com/questions/viewtopic.php?f=2&t=9211

reinout-g's How to fairly divide a sandwich between 3
http://web2.0calc.com/questions/solved-how-to-fairly-divide-a-sandwich-between-three

http://web2.0calc.com/questions/2048-game-puzzle

---------------------------------------------------------------------------------------------------------------------
Please do not post on the end of this unless you want to add a puzzle page of your own.
Feb 28, 2014

#9
+112008
+17

Brain Teaser posted by Rosala (25/5/14)

http://web2.0calc.com/questions/brain-teaser_1

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

http://web2.0calc.com/questions/math-puzzle_1

May 25, 2014

#1
+112008
+9
*
PRINTABLE PUZZLES - WEB SITE.

This site has many different printable puzzles. They also come in many different difficulty levels.
I really like the Kakuro puzzles but there are many good ones.

This is a picture of the introduction page, You will have to go to the web page to get into the puzzles and print them out.

140228 Krazydad Printable Puzzles, Mazes and more.JPG
Mar 1, 2014
#7
+112008
+9

I can't edit pages from the old forum so I'll start a new post!

CPhill's challenge puzzle    (12May14)

http://web2.0calc.com/questions/tricky-puzzle-problem-from-cphill-can-you-work-it-out

Collision time puzzle (12May14)

http://web2.0calc.com/questions/does-everybody-know-1-1#rr105228

May 12, 2014
#8
+112008
+9

Jedithious's - Water in Glasses Puzzle

http://web2.0calc.com/questions/fraction-problem

4 digit reverse number puzzled

http://web2.0calc.com/questions/math_67

May 17, 2014
#9
+112008
+17

Brain Teaser posted by Rosala (25/5/14)

http://web2.0calc.com/questions/brain-teaser_1

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

http://web2.0calc.com/questions/math-puzzle_1

Melody May 25, 2014
#10
+112008
+11

Money Puzzle

You borrow $50 from your mom and$50 from your dad to buy a T-shirt.

The T-shirt costs $97 and you receive$3 change.

You give $1 to your mom,$1 to your dad and keep $1 to yourself. Now you owe$49 to your mother $49 to your father and the$1 you kept to yourself.

$49+$49+$1 =$99.

Where did the last dollar go?

by Rhino (12/6/14)

Jun 12, 2014
#11
+112008
+6

Another "where did the last dollar go."

3 men went to a hotel to rent a room, the cost of the room was $30. Each man paid$10 to the bellboy and proceeded to there room. After a little while the bellboy realized that there was a special on rooms that night and the price for the mens room should have been $25. On his way to the mens room to give them back$5 he was puzzled how he was going to split $5 as he had no change. He decided he would give them each$1 and keep the remaining $2 for himself. So each man originally paid$10, but after the bellboy gave each man $1 back, each man paid$9. 9 x 3 = $27 plus the$2 the bellboy put in his pocket equals $29. The original price for the room was$30. Where did the last dollar go?

Good luck with that...

http://web2.0calc.com/questions/3-men-went-to-a-hotel-to-rent-a-room-the-cost-of-the-room-was-30-each-man-paid-10-to-the-bellboy-and-proceeded-to-there-room-after-a-li

Jun 16, 2014
#12
+112008
+6

This is not really a puzzle but it is in that vein.

## Fallacious Proofs     (reinout-g)

http://web2.0calc.com/questions/begin-of-lunch-box-unwrap_2

Jun 19, 2014
#13
+112008
+6

#### Puzzle time with a watery problems:

Submitted anonymously 24/6/14

(1)  Tap A can fill up an empty tank in 3 hours.Tap B can fill up the same empty tank in 4 hours.Tap C can fill up the same empty tank in 6 hours.How many hours will it take to fill up the empty tank if all the taps are turned on at the same time?

http://web2.0calc.com/questions/tap-a-can-fill-up-an-empty-tank-in-3-hours-tap-b-can-fill-up-the-same-empty-tank-in-4-hours-tap-c-can-fill-up-the-same-empty-tank-in-6-hours

(2)  An empty tank has a capacity of 55.2 litres.Water flows from a Tap A at 3.6 litres per mimute and 2.4 litres per minute from a Tap B.Tap A was turned on first.Tap B was turned on 2 minutes later.The taps were turned off at the same time when the tank was completely filled without overflowing.How much water flowed from Tap B?

http://web2.0calc.com/questions/an-empty-tank-has-a-capacity-of-55-2-litres-water-flows-from-a-tap-a-at-3-6-litres-per-mimute-and-2-4-litres-per-minute-from-a-tap-b-tap-a-w

Jun 24, 2014
#14
+112008
+6

#### Q:  Solve for LASER+REAL=SHARE, and replace each letter to a number?

Submitted by anonymous 25/6/14

#### Q:  Mary is 24.  She is twice as old as Ann was when Mary was as old as Ann is now. How old is Ann?

Submitted anonymously 28/6/14

#### Q:  Using only 5 0's and one type of Mathematical Operator, can you get 120?

(Well maybe 2 or 3 operators might be okay.   Submitted by  TakahiroMaeda  (1/7/14)

Jun 25, 2014
#15
+112008
+6

### Math activities - holiday entertainment.

http://www.hawebmedia.com/activites/enrichment/stumpers/index.html

Maths Fallacy - can you find it?   7/7/14

http://web2.0calc.com/questions/step-1-let-a-b

Why is 2*10 and 2*11 the same thing?

http://web2.0calc.com/questions/why-is-2-10-and-2-11-the-same-thing

Jul 5, 2014
#16
+112008
+6

NUMBER COMBINATION PUZZLES:

Is it possible to get 873 from 100 75 50 25 10 6    (Answers on this page)

http://web2.0calc.com/questions/is-it-possible-to-get-873-from-100-75-50-25-10-6

Jul 13, 2014
#17
+112008
+6

Thankyou anonymous for providing the puzzle and thanks AzizHusein for providing the clever solution. 1/8/14

Does

# y Σ x X ^

mean anything to anyone?

Jul 31, 2014
#18
+112008
+6

Puzzles from Reinout-g     (first posted 15/5/14)

Puzzle time!

http://web2.0calc.com/questions/logic-s-puzzle#rr106124

and a hint for the probability puzzle!

Aug 5, 2014
#19
+112008
+6

BRAIN TEASERS                      (posted by Reinout-g   15/5/2014)

Looking for a challenge?

Have a look at one of these two!

Scroll down to find the latest!

http://web2.0calc.com/questions/probability-puzzles

http://web2.0calc.com/questions/logic-s-puzzle

Aug 5, 2014
#20
+112008
+9

Mystery Number puzzle (8/8/14)

The mystery number has 3 digits is not divisable by 2 3 4 5 6 10

See solutions at:

http://web2.0calc.com/questions/the-mystery-number-has-3-digits-is-not-divisable-by-2-3-4-5-6-10#sthash.gTwGh0TN.dpuf

---------------------------------------------------------

Aug 8, 2014
#21
+112008
+9
Aug 20, 2014
#22
+8259
+3

Thank you, Melody!

That is nice!

Aug 21, 2014
#23
+8259
+3

There is a new riddle post by DragonSlayer554.

http://web2.0calc.com/questions/funny-riddle

some are funny! Beware! You may want some more riddles!

Aug 29, 2014
#24
+8259
+3

Continuing after the War for Camelot, I continued the riddles. The following link is answering and asking riddles

Before the War for Camelot riddles

Sep 6, 2014
#25
+112008
+9

1) Prison riddle from Reinout-g   (Thanks Reinout)

http://web2.0calc.com/questions/math-riddle_1

2) Car Park Puzzle from Stu   (25/9/14)

What is the missing car park number in the car lot.

16, 06, 68, 88, __ , 98   ?

http://web2.0calc.com/questions/problem-solve-this-given-to-primary-school-children-in-china#r0

Sep 11, 2014
#26
+112008
+6

The \$30 hotel puzzle.    (Thanks Landry     24/9/14 )

This one has been around for ever - that is because it is so good!

I have hidden the answer so if you want the answer from a moderator you might have to beg.   LOL

http://web2.0calc.com/questions/just-a-little-riddle#rr1

Sep 24, 2014
#27
+112008
+3

http://web2.0calc.com/questions/random-puzzle-v2

2+2=5     Thanks  Takahiro Maeda             15/10/14

Takahiro invites you to find the fallacy

http://web2.0calc.com/questions/what-is-2-2_28

$${\sqrt{-{\mathtt{1}}}}$$   2³  Σ  Π  and it was delicious.                (17/10/14)

http://web2.0calc.com/questions/nbsp-nbsp-2-sup3-nbsp-sigma-nbsp-pi-nbsp-and-it-was-delicious

Great puzzle - Thanks flflvm97         (15/12/14)

http://web2.0calc.com/questions/flflvm-s-daily-question-day-3

Chess board number Puzzle      (26/1/15)

http://web2.0calc.com/questions/in-the-top-row-of-an-nbsp-nbsp-chessboard-tom-writes-the-values-1-2-4-8-16-32-64-128-in-the-leftmost-column-tom-writes-the-values

Coin puzzle       (31/1/15)

http://web2.0calc.com/questions/tricky-math-question

Code Puzzle   from TakahiroMaeda   (12/2/15)

http://web2.0calc.com/questions/anyone-likes-code-cracking

This number puzzle is just plain weird :)      (10/4/15)    Bertie has answered it.

http://web2.0calc.com/questions/brain-teaser_3#rr6

Carpet puzzle    (25 April 2015)

http://web2.0calc.com/questions/good-luck-with-this-one

Where did the little square go.    Great puzzle      (3/5/14)

http://web2.0calc.com/questions/where-did-a-black-square-go

A number puzzle with a difference      (9/5/15)

http://web2.0calc.com/questions/channel-21-news-public-service-announcement#rr2

A Time Puzzle.     Thanks Civonamzuk   (9/5/15)

http://web2.0calc.com/questions/how-many-times-do-the-two-hands-of-a-clock-point-in-the-same-direction-between-6-00-am-and-6-00-pm-of-a-single-day_1

Dividing land equally by shape and area Puzzle    Thanks Civonamzuk and Alan   (17/5/15)

http://web2.0calc.com/questions/a-father-wishes-to-divide-a-square-piece-of-land-among-his-five-sons-one-son-is-his-favorite-and-he-wants-to-give-him-one-quarter-of-the-l

Find the product     (30/5/15)

http://web2.0calc.com/questions/m-a-m-b-m-c-m-z

Month cipher  :)             (16/8/15)