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Class 12 Biology book Santra Publication In PDF format Unit-1: Reproduction in Organisms                     Chapter-1:  Reproduction in Org...

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Class 12 Chhaya Mathematics ebook

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Class 12 Chhaya Mathematics Book In PDF format Unit-1 : Relation & Mapping              Chapter-1:  Relation             Chapter-2:  Map...

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Thursday, 9 July 2020

Class 11 Biology ebook

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Class 11 biology book In PDF format Introduction:   Introduction to Biology Unit-1:  Diversity of Living Organisms           Chapter 1:  Sci...

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Saturday, 13 June 2020

Class 12 Chhaya Physics ebook

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Class 12 Chhaya Physics book In PDF format Unit-1:  Electrostatics           Chapter-1:  Elementary phenomena of Electrostatics           Ch...

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Thursday, 11 June 2020

Class 12 Chhaya chemistry ebook

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Class 12 Chhaya chemistry book In PDF format Unit-1:  Solid state Unit-2:  Solution Unit-3:  Electrochemistry Unit-4:  Chemical kinetics Uni...

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Sunday, 31 May 2020

Class 11 Chhaya math ebook

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Class 11 Chhaya math book In PDF format Unit-1:   Sets & Function           Chapter-1:  Set theory (সেট তত্ত্ব)           Chapter-2:  Re...

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Thursday, 14 May 2020

Class 11 Chhaya chemistry book

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Class 11Chhaya chemistry book In PDF format Unit-1:  Some basic concepts of chemistry Unit-2:  Structure of atom Unit-3:  Cla...

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Friday, 10 April 2020

Class 11 Chhaya Physics book

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CLASS 11 CHHAYA PHYSICS BOOK IN PDF FORMAT Unit-1 : Physical world and measurement        Chapter 1:  Units & Measurement Unit-2...

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Wednesday, 17 July 2019

TRIGONOMETRIC FUNCTIONS

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TRIGONOMETRIC FUNCTIONS Some basic information or laws SinA=BC/AC=ALTITUDE/HYPOTENEWS CosA=AB/AC=BASE/HYPOTENEWS TanA=BC/AB=ALTIT...