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#51 2013-03-24 23:03:06

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#52 2013-03-27 12:14:32

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Good!
Example:

T[sub]4[/sub] means that you need to get the 5th triangular number because T[sub]0[/sub] is 1, the first triangular number.

Okay!
Next question:
Numbers 3 4 5
Operations T +
Answer 46


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#53 2013-03-27 12:18:06

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

Hi;

The first triangular number is 0, so T0 = 0.

But using your definition we can say

T3 + T4 + T5 = 46


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#54 2013-04-18 13:09:09

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Oh. My classmate taught me that T thing.

Number 14 28 42
Operation + - [sup]2[/sup]
Answer 1764


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#55 2013-04-18 13:39:25

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

42^2 = 1764


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#56 2013-04-18 20:21:17

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

up

New edition :

P * C.P = 5

P = Prime
C = Composite


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#57 2013-04-18 22:46:49

Agnishom
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From: Riemann Sphere
Registered: 2011-01-29
Posts: 21,541
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Re: Can U solve this?

it can't be.

5 = 5*1 and there isn't any other factorisation


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'But our love is like the wind. I can't see it but I can feel it.' -A Walk to remember

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#58 2013-04-19 00:24:16

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

Hi julianthemath;

5 only has the factorization of 5 x 1. 1 is not composite or prime. Please post another problem this one has no solution.


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#59 2013-04-19 13:04:08

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

C.P means decimal number. Try again.


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#60 2013-04-22 08:50:04

mathdad
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Registered: 2013-04-13
Posts: 21

Re: Can U solve this?

julianthemath wrote:

up

New edition :

P * C.P = 5

P = Prime
C = Composite

Still not possible. 

All P are such that P > 1. The smallest P is 2. And, the smallest C such that C > 0 is 4

Thus P * C.P >= 2 * 4.d = 8.0 + 2d (where 2d is 2 times the decimal part)

If you were trying to go for 2 * 2.5, then the 2 in 2.5 is not Composite, it is Prime.

Last edited by mathdad (2013-04-22 09:04:17)

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#61 2013-04-22 12:16:57

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Oh, well.

No answers, no points. sad

Wanna ask, mathdad? bobbym? Or just keep me?


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#62 2013-04-22 12:18:22

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

Hi;

Okay, let me see the answer. Please hide the answer cause someone else may still want to work on it.


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#63 2013-04-23 12:18:41

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

81 + X - 4 = 85

Solve for X.


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#64 2013-04-23 15:44:15

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

Hi;

Thanks for the answer.

X = 0


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#65 2013-04-23 15:56:41

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Again!

81 + X - 4 = 85

You might have an error.


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#66 2013-04-23 16:14:30

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

H;

81 + X - 4 = 85

Add 4 to both sides:

81 + X = 89

Subtract 81 from both sides.

X = 8


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#67 2013-04-23 18:38:15

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Wow.

1777 - 777 + 777 * 777 = ?


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#68 2013-04-23 20:00:46

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

604729 is the answer.


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#69 2013-04-23 20:31:14

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Wow!

This time, there are points.

X + X = X

What makes this impossible to answer? 30 points


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#70 2013-04-23 21:01:01

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

Nothing, X can be 0.


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#71 2013-04-25 21:00:53

mathaholic
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From: idk
Registered: 2012-11-29
Posts: 2,919
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Re: Can U solve this?

Oh. How do you like my signature? Funny, right?

Bobbym - 30

3 6 9 15 ? What is the fifth number?


Last edited by julianthemath (2013-04-25 21:01:50)


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#72 2013-04-25 23:32:11

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

I like 21 as the nest number.


I worked a long time on bobbym - 30 but could not come up with anything.


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#73 2013-04-26 12:02:20

mathaholic
Member
From: idk
Registered: 2012-11-29
Posts: 2,919
Website

Re: Can U solve this?

Oh.

Bobbym - 60

If China has a population of 1,234,567,890,
India 123,456,789
USA 12,345,678
Indonesia 1,234,567
What is the population of Brazil?


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#74 2013-04-26 12:18:01

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 95,893

Re: Can U solve this?

Is it 123 456 ?

How are the chickenpox?


In mathematics, you don't understand things. You just get used to them.

If it ain't broke, fix it until it is.

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#75 2013-04-26 13:39:11

mathaholic
Member
From: idk
Registered: 2012-11-29
Posts: 2,919
Website

Re: Can U solve this?

No. I didn't have it, my cousins do. The start of the infection was during the afternoon I came home after my last exams. And now, some of my cousins are having the chickenpox. So, I just need to stay inside.

Yes. It is 123,456.

Bobbym - 90

If Gangnam style were a country (by no. of views), what rank is it?


It's summer.

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