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

Samgelinas's - Addictive web game.

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

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

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

Samgelinas's - Addictive web game.

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

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

Melody Feb 28, 2014

#9**+17 **

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

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

**Puzzle posted by NinjaDevo (5/6/14)**

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

Answer is here.

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

Melody May 25, 2014

#1**+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.

http://krazydad.com/ Highlight the address, right click then click on goto

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

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.

http://krazydad.com/ Highlight the address, right click then click on goto

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

Melody Mar 1, 2014

#7**+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

Melody May 12, 2014

#8**+9 **

Jedithious's - Water in Glasses Puzzle

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

4 digit reverse number puzzled

Melody May 17, 2014

#9**+17 **

Best Answer

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

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

**Puzzle posted by NinjaDevo (5/6/14)**

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

Answer is here.

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

Melody May 25, 2014

#10**+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?

Solution: http://web2.0calc.com/questions/math-question_54

by Rhino (12/6/14)

Melody Jun 12, 2014

#11**+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...

Melody Jun 16, 2014

#12**+6 **## Fallacious Proofs (reinout-g)

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

Melody Jun 19, 2014

#13**+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?

Answers:

(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?

Answers:

Melody Jun 24, 2014

#14**+6 **####

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

#### 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?

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

Submitted by anonymous 25/6/14

Answers: http://web2.0calc.com/questions/algebra_890

Submitted anonymously 28/6/14

Answers:

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

Answers:

Melody Jun 25, 2014

#15**+6 **### Math activities - holiday entertainment.

##

NinjaDevo 5/7/14

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

Melody Jul 5, 2014

#16**+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

Melody Jul 13, 2014

#17**+6 **# y Σ x X ^

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

Does

mean anything to anyone?

Melody Jul 31, 2014

#18**+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!

Melody Aug 5, 2014

#19**+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!

Melody Aug 5, 2014

#20**+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:

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

Melody Aug 8, 2014

#21**+9 **

DragonSlayer's riddles. (16/8/14)

http://web2.0calc.com/questions/can-someone-help-me-out-on-this-riddle-please#r0

Melody Aug 20, 2014

#23**+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!

DragonSlayer554 Aug 29, 2014

#24**+3 **

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

http://web2.0calc.com/questions/funny-riddles-continued

Before the War for Camelot riddles

DragonSlayer554 Sep 6, 2014

#25**+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

Melody Sep 11, 2014

#26**+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

Melody Sep 24, 2014

#27**+3 **

New Puzzle from Radio - no answer logged yet 9/10/14

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)

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)

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

Find the product (30/5/15)

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

Month cipher :) (16/8/15)

http://web2.0calc.com/questions/talk-about-math-let-s-do-ciphers_1

Melody Oct 9, 2014