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Option 4 : 109/6
Sum of the age of the five players = 19(5) = 95
Sum of the age of the seven players = 20(7) = 140
When the youngest player is excluded, number of players becomes 6 and the average age of the becomes 21.
Sum of the age of the seven players = 21(6) = 126
Hence, the age of the youngest player is 140 – 126 = 14
The average age of initial five players and the youngest joins = (95 + 14)/6 = 109/6
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