S _ L _ T _ _ N
F _ R
4
N _ M B _ R S :
1
+
1
+
2
+
4 =
1
X
1
X
2
X
4 .
S _ L _ T _ _ N
F _ R
5
N _ M B _ R S :
1
+
1
+
1
+
2
+
5 =
1
X
1
X
1
X
2
X
4
1
+
1
+
1
+
3
+
3 =
1
X
1
X
1
X
2
X
4
1
+
1
+ 2
+
2
+
2 =
1
X
1
X
2
X
2
X
2 Clue
"DIDN'T YOU SAY THAT YOU SOLD YOUR WELL TO THIS FARMER?" BIRBAL ASKED THE NEIGHBOUR. "SO, THE WELL BELONGS TO HIM NOW, BUT YOU HAVE KEPT YOUR WATER IN HIS WELL. IS THAT RIGHT? WELL, IN THAT CASE YOU WILL HAVE TO PAY HIM A RENT OR TAKE YOUR WATER OUT AT ONCE." THE NEIGHBOUR REALISED THAT HE WAS OUTWITTED. HE QUICKLY APOLOGISED AND GAVE UP HIS CLAIM THE NUMBERS CAN BE GROUPED BY PAIRS: 999,999,999 AND 0; 999,999,998 AND 1′ 999,999,997 AND 2; AND SO ON.... THERE ARE HALF A BILLION PAIRS, AND THE SUM OF THE DIGITS IN EACH PAIR IS 81. THE DIGITS IN THE UNPAIRED NUMBER, 1,000,000,000, ADD TO 1. THEN: (500,000,000 X 81) + 1= 40,500,000,001 SOLUTION FOR 4 NUMBERS: 1 + 1 + 2 + 4= 1 X 1 X 2 X 4. SOLUTION FOR 5 NUMBERS: 1 + 1 + 1 + 2 + 5= 1 X 1 X 1 X 2 X 4 1 + 1 + 1 + 3 + 3= 1 X 1 X 1 X 2 X 4 1 + 1 +2 + 2 + 2= 1 X 1 X 2 X 2 X 2 BOB SUGGESTED THAT DAVE HOLD HIS FINGER IN THE AIR WHILE SOMEONE WOUND A PIECE OF STRING TIGHTLY AROUND HIS FINGER JUST ABOVE THE METAL RING. THE STRING FORCED THE SWELLING DOWN. AS THEY UNWOUNDED THE STRING FROM THE END NEAREST THE RING, SOMEONE ELSE SLID THE RING UP. THEY CONTINUED WINDING AND UNWINDING THE STRING UNTIL THE RING COULD BE EASILY REMOVED