Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 2013-03-17 12:15:10

mathgogocart
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Registered: 2012-04-29
Posts: 1,426

FUN math puzzles!

I have fun math puzzles
1..    If 1/2x +1/2(1/2x + 1/2(1/2x +1/2(1/2x + ... = y,
then x = ?
points:5

8.    What is the area of a regular hexagon with sides 1 in. Long?
points:1

look on MIF for help on number 8


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#2 2013-03-17 12:24:22

Nehushtan
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From: London
Registered: 2013-03-09
Posts: 608
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Re: FUN math puzzles!


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#3 2013-03-17 12:50:16

mathgogocart
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Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Nehushtan wrote:

the awnser,not formula.


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#4 2013-03-17 13:00:52

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi mathgogocart;

Last edited by bobbym (2013-03-17 13:01:39)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#5 2013-03-17 13:11:42

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

1.y=x!
Neshutan:5
bobbym:0
________________________
5.    What place in this world can have their temperatures Fahrenheit and Celsius equal? 10 points,5 if searched

Last edited by mathgogocart (2013-03-18 07:07:20)


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#6 2013-03-17 17:48:18

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi;

Yes, I had the formula wrong!

Last edited by bobbym (2013-03-17 17:59:29)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#7 2013-03-18 03:59:01

Nehushtan
Member
From: London
Registered: 2013-03-09
Posts: 608
Website

Re: FUN math puzzles!


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#8 2013-03-18 07:10:46

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Neshutan:10
bobbym:6
Neshutan is partly correct smile
________________________________
1.At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party? 15 points
2.Using eight eights and addition only, can you make 1000? 20 points
Hint for 2:conbine like 2 8ts are 88

Last edited by mathgogocart (2013-03-18 07:11:18)


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#9 2013-03-18 07:23:56

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi;

Last edited by bobbym (2013-03-18 07:29:29)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#10 2013-03-18 07:30:39

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,847

Re: FUN math puzzles!

Hi mathgogocart


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#11 2013-03-18 07:35:18

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Neshutan:10
bobbym:41
Anononmistefy:35
Bobbym is right FORR BOTH!!!!!
____________________________________________
1.6-4)  Today is Friday. What day of the week is it 80 days from today?
4_circles.gif
7-1)  The diameter of the circles is 2 centimeters. Calculate the area that is purple.

Last edited by mathgogocart (2013-03-18 07:38:03)


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#12 2013-03-18 07:37:31

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi;

Last edited by bobbym (2013-03-18 07:39:23)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#13 2013-03-18 07:39:03

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Neshutan:10
bobbym:46
Anononmistefy:35


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#14 2013-03-18 07:49:30

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Bozeman is the one I wanted but could not remember. It had a low of -43F in 1936.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#15 2013-03-18 10:55:30

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Neshutan:10-Junior Awnserer
Bobbin: 46-cool awnserer
Anononmistefy:35-cool awnserer
___________________________________
7-7)  A half circle overlaps with a square. The diameter of the half circle is 12 inches. What is the area of the hatched/striped parts?-5 points
half_circle.gif
7-14)   John went to the stores to buy Christmas presents for his kids. He spent 2 thirds of his money at a book store. He then spent 1 third of the remaining money at a craft store. At the end he had $8 left. How much money did he have at the beginning?-8 points
Questions 1:

5.If Logx (1 / 8) = - 3 / 2, then x is equal to _________-5 points

A. - 4
B. 4
C. 1 / 4
D. 10


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#16 2013-03-18 12:59:20

Nehushtan
Member
From: London
Registered: 2013-03-09
Posts: 608
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Re: FUN math puzzles!


147 books currently added on Goodreads

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#17 2013-03-18 13:50:53

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi;

Last edited by bobbym (2013-03-18 13:53:58)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#18 2013-03-19 10:58:34

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Neshutan:28-Junior Awnserer
Bobbin: 64-Awesome Awnserer
Anononmistefy:35-cool awnserer
____________________________________________
1.A father in his will left all his money to his children in the following manner:

$1000 to the first born and 1/10 of what then remains, then
$2000 to the second born and 1/10 of what then remains, then
$3000 to the third born and 1/10 of what then remains, and so on.

When this was done each child had the same amount. How many children were ther?e-10 points
Question 2: Car A began a journey from a point at 9 am, traveling at 30 mph. At 10 am car B started traveling from the same point at 40 mph in the same direction as car A. At what time will car B pass car A?No Explanation:12 points,Explantion 20 points

List:
20-Junior Awnserer
30-Cool Awnserer
60-Awesome Awnserer
100-Epic Awnserer
135-Genius
more coming....

Last edited by mathgogocart (2013-03-19 11:01:44)


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#19 2013-03-19 13:20:48

Nehushtan
Member
From: London
Registered: 2013-03-09
Posts: 608
Website

Re: FUN math puzzles!

Last edited by Nehushtan (2013-03-19 13:25:08)


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#20 2013-03-19 13:24:09

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Neshutan:68-Awesome Awnserer-TOP AWNSERER!! smile
Bobbin: 84-Awesome Awnserer
Anononmistefy:35-cool awnserer
___________________________________________
1.Question 2: Four times the first of three consecutive even integers is six more than the product of two and the third integer. Find the integers.
5 points,12 if explained
2.Question 1: Find the general solution for differential equation

(D4 - 5D3 + 5D2 + 5D - 6)y = 0
20 points,35 if explained

Last edited by mathgogocart (2013-03-20 11:51:51)


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#21 2013-03-19 13:52:41

Nehushtan
Member
From: London
Registered: 2013-03-09
Posts: 608
Website

Re: FUN math puzzles!

I think the numbering of the questions should be more consistent. smile


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#22 2013-03-19 13:53:42

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi;

Last edited by bobbym (2013-03-19 14:37:13)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#23 2013-03-20 11:03:43

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

New MATH RIDDLES!
1.If you take 3 apples from a group of 5, how many do you have?-3 points-Easy

2.What would be the seventh rung of the following pyramid?-6 points
1
11
21
1211
111221
312211
13112221

3.So you think you're good at math? Complete the sequence: 1=3, 2=3, 3=5, 4=4, 5=4, 6=3, 7=5, 8=5, 9=4, 10=3, 11=?, 12=?-10 points


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#24 2013-03-20 11:08:18

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,752

Re: FUN math puzzles!

Hi;

You did not tally up the scores from posts #21 and #22.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Online

#25 2013-03-20 11:52:06

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: FUN math puzzles!

Can you please ddo it?


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