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What comes next in these sequences

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cornelia 1 | 21:15 Sun 13th Dec 2009 | Crosswords
10 Answers
1. 2, 7, 3, 6, 4,?
2. 4, 15 , 59, 235?
3. 2, 4, 12, 48, 240 ?
4. 12, 14, 18, 116?

If anyone would be kind enough to help and also give the logic behind the answer.Trying to get my head round this type of thing.
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1, 5 2 sequences here - one going up ,one going down
3. 1440 multiply by 2 then 3 then 4 then 5 so you need 240 x 6
are you sure of the 235 in no 2? - if it was 239....
answer to question 2 is to multiply the number by 4 and deduct 1 so next is 939
oldred - that works if the last number is 239 not 235?
59 x 4 = 236, less 1 = 235
235 x 4 = 940, less 1 = 939

It's been a long day but I think I'm right.
yes of course - i was doing 4 x 60! Now what about the last one, can we get it??
4 is 132
Nth term is 100 + 2N
just double number after the leading 1 = 132
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Thanks everyone, really good of you to give me the workings out,hate to not know why an anser is X without the reason behind it, trying to live and learn.

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