There are a number of points to remember while solving Number Series Different ways of solving no. series +1,+2,+3,+4 -1,-2,-3,-4 +1,-1,+1,-1 Perfect square series - This type of series is based on square of a number which is in same order and one square number is missing in that series. Example - 441,484,529,576,.?.. Answer -441= 21², 484= 22², 529= 23², 57...
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