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 Post subject: number sequence
PostPosted: Sun Oct 13, 2013 10:50 am 
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Joined: Mon Sep 10, 2012 10:51 am
Posts: 865
Can you please help with this....

5,10,30,( ), 600, ( )

Thanks


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 Post subject: Re: number sequence
PostPosted: Sun Oct 13, 2013 11:26 am 
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Joined: Fri Nov 17, 2006 8:54 pm
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Location: caversham
sonasona wrote:
Can you please help with this....

5,10,30,( ), 600, ( )

Thanks


X2 X3 X4 X5 X6

So 120 and 3600?


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 Post subject: Re: number sequence
PostPosted: Sun Oct 13, 2013 12:51 pm 
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Thank you :)


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 Post subject: Re: number sequence
PostPosted: Tue Oct 15, 2013 8:05 am 
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Posts: 865
I'm not getting these either :(

( ),1,4,16,64

21,12,24,42,84,48, ( )


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 Post subject: Re: number sequence
PostPosted: Tue Oct 15, 2013 8:16 am 
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Joined: Mon Aug 22, 2011 8:20 pm
Posts: 1706
Location: Warwickshire
( ),1,4,16,64
x4 - so 0.25 or 1/4

21,12,24,42,84,48, ( )
reverse the digits, then double - so next one will be double 48, i.e. 96


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 Post subject: Re: number sequence
PostPosted: Tue Oct 15, 2013 8:25 am 
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Joined: Tue Dec 18, 2012 10:59 am
Posts: 3579
That last one is just pure evil, sort of thing my nerdy 13 year old would invent. Where did it come from?


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 Post subject: Re: number sequence
PostPosted: Tue Oct 15, 2013 8:55 am 
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Joined: Mon Sep 10, 2012 10:51 am
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I'm not sure who produced these questions.....they are in my archive of older papers and I gave them to someone so their Dd could prepare for 2014. They are now coming back to haunt me and it's a little embarrassing as I can't explain. I don't have the answers either so can't even fluke it! I do have this forum though :D

Many many thanks :)


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 Post subject: Re: number sequence
PostPosted: Tue Nov 26, 2013 6:29 pm 
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Joined: Mon Sep 10, 2012 10:51 am
Posts: 865
Need help please :oops:

25,?,49,64,?

from SD book.

Thanks


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 Post subject: Re: number sequence
PostPosted: Tue Nov 26, 2013 6:40 pm 
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Joined: Mon May 16, 2011 1:05 pm
Posts: 4025
Location: Reading
36

Square numbers


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 Post subject: Re: number sequence
PostPosted: Tue Nov 26, 2013 6:51 pm 
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Joined: Mon Sep 10, 2012 10:51 am
Posts: 865
I'm so thick! Thank you :D


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