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Repeated addition (Posted on 2004-02-20) Difficulty: 4 of 5
+
+=
++=
+=
++++=
+===+=
++++++=
+=
++=
+=+===+=+=
++++++++++=
+===+=

Explain the pattern and find the next five rows.

Hint: the symbols I chose have nothing to do with the pattern.

See The Solution Submitted by Tristan    
Rating: 4.3333 (3 votes)

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Solution SOLUTION??? MAY BE | Comment 6 of 14 |
Next:
13 xxxxxxxxxxxx=
14 x=x=x===x=x=x=
15 x=x==xx==x=xx=
16 +=
17 xxxxxxxxxxxxxxxx=
18 like 6, 12 ,24

Except for the rows that are exact powers, at every sequential location after the first "x"(mandatory) a "=" is placed if the numbers representing both the row and the location have a common prime divider, else "x". If there is a common composite divider STOP at that "=".
For the rows that are exact powers stop after the 1st "=" .

ady

  Posted by Ady TZIDON on 2004-02-21 02:05:27
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