Roshni Chouhan said: (Thu, Jan 3, 2019 02:16:57 PM IST)
Rohini Ashok Illale said: (Wed, Dec 5, 2018 01:16:08 PM IST)
Because this series is related to the square of prime numbers. i.e. 7,9,11,13,17 then coming 19th square that is 361.
Rohini Ashok Illale said: (Wed, Dec 5, 2018 01:07:56 PM IST)
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