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#1 2013-03-16 14:07:22

anna_gg
Member
Registered: 2012-01-10
Posts: 113

Find the number

What is the smallest natural number such that its double is a perfect square, its triple is a perfect cube and its quintuple is a perfect quint?

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#2 2013-03-16 21:06:27

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,655

Re: Find the number

I would say that

is the number.


“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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#3 2013-03-16 22:38:51

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,432

Re: Find the number

Hi;


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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#4 2013-03-16 22:46:18

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,655

Re: Find the number

Great! We got the same answer! smile


“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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#5 2013-03-16 22:57:47

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,432

Re: Find the number

Hard to believe that is the smallest number...


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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#6 2013-03-16 23:01:02

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,655

Re: Find the number

It is rather large.


“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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#7 2013-03-16 23:07:32

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,432

Re: Find the number

Huge, as a matter of fact.


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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#8 2013-03-16 23:24:57

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,655

Re: Find the number

6810125783203125000000000000000 is the number.


“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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#9 2013-03-16 23:30:16

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,432

Re: Find the number

Yes, I know that. She did not comment on the answers yet.


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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#10 2013-03-16 23:39:00

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,655

Re: Find the number

She will.


“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 2013-03-16 23:55:20

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,432

Re: Find the number

I think so but I am checking.


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

#12 2013-03-24 00:25:52

anna_gg
Member
Registered: 2012-01-10
Posts: 113

Re: Find the number

Sorry guys, I have been etremely busy for the past week...
All of your answers are correct!
Congrats!

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