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 Post subject: Finding the next number that continuesPosted: Tue Aug 03, 2010 6:39 pm

Joined: Tue Sep 01, 2009 3:38 pm
Posts: 2083
Location: Maidstone
Can you help me with this one please.

6, 10, 18, 34, 66

What is the next number that continues the series?

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 Post subject: Re: Finding the next number that continuesPosted: Tue Aug 03, 2010 6:54 pm
With number sequences one of the methods is to look at the difference between each number

so with 6, 10, 18, 34, 66

10 - 6 = 4
18 - 10 = 8
34 - 18 = 16
66 - 34 = 32

so it follows that the next difference should again be doubled ie 32 x2 = 64

66 + 64 = 130 the next number in the sequence (hopefully)

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 Post subject: Re: Finding the next number that continuesPosted: Tue Aug 03, 2010 6:59 pm

Joined: Tue Sep 01, 2009 3:38 pm
Posts: 2083
Location: Maidstone
Damn thank you Rosered. I could work out that it follows 4, 8, 16 but couldnt see the pattern that it was multiplying by 2

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 Post subject: Re: Finding the next number that continuesPosted: Tue Aug 03, 2010 9:56 pm

Joined: Wed Jul 07, 2010 11:04 am
Posts: 455
I doubled the number and subtracted 2. Same answer,different method. just hope its right........

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