এই সমস্যার সূত্র কি হতে পারে?

asked 07 Feb, 04:08

pollob1563's gravatar image

pollob1563
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edited 07 Feb, 06:56

Mosharraf%20Hosain's gravatar image

Mosharraf Hosain ♦
23618


+২+৩+৪+........N ধারাটির সমষ্টির সূত্র হচ্ছে

(N*(N+1)*(2N+1))/6

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answered 07 Feb, 07:01

Mosharraf%20Hosain's gravatar image

Mosharraf Hosain ♦
23618

edited 07 Feb, 07:02

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question asked: 07 Feb, 04:08

question was seen: 113 times

last updated: 07 Feb, 07:02