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CGP EDU Academic Team
Published on: August 13, 2026
The series of natural is divided into group (1), (2, 3, 4), (5,6,7,8,9,10) ................and so on show that the sum of the numbers in the n th group is (n – 1) 3 + n 3 .
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Number of elements in the 
group is 
Number of elements in the 
group is 39
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