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I have listed below several values for a function F(a,b), where a and b represent decimal digits. The samples are tabulated in 12 rows, numbered 0 to 11:

Row 0: F(1,0)=10
Row 1: No samples
Row 2: F(2,8)=28; F(3,9)=39
Row 3: F(2,7)=27; F(4,9)=49
Row 4: F(2,6)=26; F(3,8)=38; F(5,9)=59
Row 5: F(2,5)=25; F(6,9)=69
Row 6: F(2,4)=24; F(3,7)=37; F(4,8)=48; F(7,9)=79
Row 7: F(2,3)=23; F(8,9)=89
Row 8: F(2,2)=22 ; F(3,6)=36; ; F(5,8)=58; F(9,9)=99
Row 9: F(2,1)=21; F(4,7)=47;
Row 10: F(2,0)=20; F(3,5)=35; F(6,8)=68
Row 11: No samples.

One might deduce that F(a,b)=10*a+b, were it not for the rows 1 and 11.
For those rows there are no "red herring" samples to lead you into false conclusions.

Actually you are requested to:
1. Find a row-dependent function G(a,b,r), r representing the row number, for which all the above values fit, - and in rows 1 & 11 the following is true:

G(7,3,1)=32; G(6,8,1)=59; and G(6,4,11)=45; G(1,11,11)=32;

2. Evaluate G(3,7,8).

3. Explain, why there are no "misleading examples" for row 1, 11 and higher.

 No Solution Yet Submitted by Ady TZIDON No Rating

 Subject Author Date Why no one solves it ? Ady TZIDON 2013-07-13 01:34:12 hint: NOW solve it Ady TZIDON 2013-07-07 07:50:19

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