I'd lean 68 over 48 but not sure what the rule is.
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RudyRuetigger
SBR Aristocracy
08-24-10
65084
#8
3 * the next number - 1
Comment
playersonly69
SBR Posting Legend
01-04-08
12827
#9
I knew that 68 was probably it, but wasnt sure. This was for my 5th grade daughters GT class homework by the way
Comment
warriorfan707
SBR Posting Legend
03-29-08
13698
#10
3x -1
obv
Comment
InTheDrink
SBR Posting Legend
11-23-09
23983
#11
Originally posted by RudyRuetigger
3 * the next number - 1
could just as easily be 183 = multiply last 2 numbers in the sequence - 1
not enough info to say for sure
Comment
Full Time Hobo
SBR MVP
05-16-10
2778
#12
3x-1 is the pattern.
I don't know what the 'rule' is though.
Comment
trytrytry
SBR Posting Legend
03-13-06
23649
#13
these 3x patterns are easy to see...
Comment
sweethook
SBR Posting Legend
11-21-07
12667
#14
even
Comment
ttwarrior1
BARRELED IN @ SBR!
06-23-09
28456
#15
28.......
13 and 18 are before, 28 after
Comment
Gee
SBR MVP
04-08-10
4547
#16
I googled the numbers. I don't actually understand the explanation and think 3x -1 is easier (and gives the same answer), but its clearly what they are looking for:
12. This sequence consists out of two alternating series. <center>3 8 23 68 203 608</center>
The first series shows the relation between the 1st and 3rd number, 3rd and 5th etc. in this case this following relation exists: 23-3=20 203-23=180.
This difference is a multiple of each other by a factor of 180/20=9.
The second series shows the relation between the 2nd and 4th number, the 4th and 6th etc. in this case 68-8=60. Finding the next number in the sequence means using the relation from the first series.
This means that 60 must be multiplied by 9, resulting in 540. This number is added to 68 which results in 608 as next number in the sequence.