Question 935631: in any six number string ie : 2-23-26-30-40- 49
the first number plus the sum of the difference between the numbers equal the last number ie 2+20+3+14+10+9= 49
PLEASE EXPLAIN
THANK YOU
JOHN
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! Call the 6 number string:
a, b, c, d, e, f
-------------------
They say that:
(1) 
Rearrange this:
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This proves it for any numbers
Suppose you had a combination of numbers
and letters:
2, b, 7, -8, e, -2
Just plug these values into (1)
(1)
(1) 
(1) 
(1) 
(1) 
OK
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