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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### Re: Can U solve this?

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

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### 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 +

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### 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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

Oh. My classmate taught me that T thing.

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

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### Re: Can U solve this?

42^2 = 1764

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

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

New edition :

P * C.P = 5

P = Prime
C = Composite

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,897
Website

### 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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### 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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

C.P means decimal number. Try again.

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

Member
Registered: 2013-04-13
Posts: 21

### Re: Can U solve this?

julianthemath wrote:

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
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

Oh, well.

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### 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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

81 + X - 4 = 85

Solve for X.

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### Re: Can U solve this?

Hi;

X = 0

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

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

Again!

81 + X - 4 = 85

You might have an error.

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### Re: Can U solve this?

H;

81 + X - 4 = 85

81 + X = 89

Subtract 81 from both sides.

X = 8

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

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

Wow.

1777 - 777 + 777 * 777 = ?

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### Re: Can U solve this?

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

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### Re: Can U solve this?

Wow!

This time, there are points.

X + X = X

What makes this impossible to answer? 30 points

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### Re: Can U solve this?

Nothing, X can be 0.

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

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
Website

### 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)

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### 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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
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?

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,737

### 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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,895
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?

"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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