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23.
For which positive integers n is the ratio, sum k = 1 to n k ^ 2 an integer?
sum k = 1 k
(A) odd n only
(B) even n only
Asked by rareaditi4159 | 29 Sep, 2023, 08:25: PM
Expert Answer
It is understood we have to find the ratio of
above ratio is integer when , n = 1 , 4, 7 , 10 , 13 ................
Answered by Thiyagarajan K | 29 Sep, 2023, 09:06: PM
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