অ

ক

খ

জ্ঞ

আ

ই

ঋ

अ

क

म

इ

A

B

π

∑

x + y = z

E = mc²

a² + b² = c²

Sankardev Sisu Vidya Niketan, Naoboisa Affiliation No: SEBA/SSVN/2004/412

অ

ক

খ

জ্ঞ

আ

ই

ঋ

अ

क

म

इ

A

B

π

∑

x + y = z

E = mc²

a² + b² = c²

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