Question 1026557: find the next term 1,7,47,?
Found 3 solutions by rothauserc, Edwin McCravy, Alan3354:
Answer by rothauserc(4718)   (Show Source):
Answer by Edwin McCravy(20064)  (Show Source):
You can put this solution on YOUR website!
List them in a column
1
7
47
To the right of each, subtract the number
from the one just below it:
1 6
7 40
47
To the right of the 6, do the same, subtract
the 6 from the number just below it 40-6 = 34
write 34 out beside the 6:
1 6 34
7 40
47
Put another 34 under the 34
1 6 34
7 40 34
47
Now we work backwards. Add the 34 and the 40,
which is just left of it, getting 74. Put the
74 underneath the 40, to the right of the 74
1 6 34
7 40 34
47 74
Finally we add the 74 and the 47, getting 121,
Put the 147 underneath the 47
1 6 34
7 40 34
47 74
121
That's the next term, 121.
Edwin
Answer by Alan3354(69443)  (Show Source):
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