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The average of the first  nine prime numbers is :


Options:
A .  9
B .  11
C .  `11 1/9`
D .  `11 2/9`
Answer: Option C

Average = `((2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23)/(9))` = `100/9` =  `11 1/9`



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