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Lesson Posted 3 days ago CBSE/Class 11/Science/Mathematics CBSE/Class 11/Science/Mathematics/Unit-II: Algebra/Permutations and Combinations Exam Coaching/CET Coaching/Mathematics

Permutation and Combination

Om Prakash Mishra

I am teaching Mathematics and Physics from past more than 12 years in coaching as well as home tuition...

Permutation means arrangement Fundamental principles of counting If a work can be done in m ways and the either can be done in n ways, then the no .of ways in which both the works can be done is m×n ways. But if they are done I depend on each other that is doing of one does not affect the other,... read more

Permutation means arrangement

Fundamental principles of counting

If a work can be done in m ways and the either can be done in n ways, then the no .of ways in which both the works can be done is m×n ways.

But if they are done I depend on each other that is doing of one does not affect the other, then it is m+n.

The no of ways in which n different things can be arranged is n! Which is equal to

n!=n ×(n-1)×.....×2×1.

The no. of ways in which r things out of n things can be arranged is

n^P^r = n!/(n-r)!.

If any particular object is repeated p, q.. times then the result is divided by p! q!... respectively to get the desired permutation.

 

 

 

 

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Answered on 25 Aug Exam Coaching/CET Coaching/Biology

Sec (90×1+30)

= - Cosec30

= - 2

Atul Mittal

MBA Home Tutor

-2
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Lesson Posted on 27 Apr Tuition/BA Tuition/Advanced cell biology Biomolecules Tuition/MBBS & Medical Tuition/Physiology +4 Exam Coaching/CET Coaching/Biology Exam Coaching/CSIR NET Tuition/BSc Tuition/BSc Micro- Biology CBSE/Class 8/Science/Cell ? Structure and Functions less

Photosynthesis

Shivani Y.

Photosynthesis It is the process by which producers of the ecosystem fix atmospheric Carbon dioxide (CO2) from otherwise unavailable, inorganic, gaseous state of carbon(C) to usable organic form (carbohydrates). Many organisms can carry out photosynthesis, including both prokaryotic and eukaryotic Organisms... read more

Photosynthesis


It is the process by which producers of the ecosystem fix atmospheric Carbon dioxide (CO2) from otherwise unavailable, inorganic, gaseous state of carbon(C) to usable organic form (carbohydrates).
 
Many organisms can carry out photosynthesis, including both prokaryotic and eukaryotic Organisms for, eg. Cyanobacteria, Green Sulfur bacteria, Green non-sulfur bacteria etc. and
Algae, Plants respectively.
 
If we want to describe photosynthesis in layman's language, then it can be described as a word made up of 2 subwords that is photo + synthesis.
Where Photo= sunlight and Synthesis= to prepare something.
 
Thus photosynthesis is simply a process of preparation of the organic form of carbon (Carbohydrates) in the presence of sunlight or using energy from the sunlight and atmospheric CO2 as raw material.
 
Thus producers like plants and photosynthetic bacteria, bring the unusable form of C from the atmosphere to living system in a usable organic form.

 
Photosynthesis can be of two types:

  •     Anoxygenic photosynthesis
  •     Oxygenic photosynthesis


Anoxygenic photosynthesis:
As the name indicates Anoxy + genic where: Anoxy= without Oxygen; genic= generation
thus the type of photosynthesis where Oxygen is not generated and not evolved in the environment during the process of photosynthesis is called as Anoxygenic photosynthesis.
 
This type of photosynthesis is ancient and is the first type of photosynthesis used to occur when the earth's environment was reductive in nature, and respiration type was anaerobic.
Eg. Purple sulfur bacteria, green sulfur bacteria etc.
 
Oxygenic photosynthesis:
As the name indicates Oxy + genic where: Oxy= Oxygen; genic= generation
thus the type of photosynthesis where Oxygen is generated and evolved in the environment during the process of photosynthesis is called as Oxygenic photosynthesis.
 
This type of photosynthesis evolved when some of the producers like cyanobacteria got the ability to use water as an electron donor for the light reaction of photosynthesis to occur. Thus with the photolysis of water (H2O), Oxygen was generated and added to the environment.
This made earth's environment to become Oxidative from reductive in nature and making room for aerobic respiration to evolve further. Eg. Cyanobacteria, Algae, Plants.
 
In my next post, I will be covering the mechanism of photosynthesis.
Your feedback is important. Do comment your queries and suggestions.
 
Happy Learning
Shivani

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Answered on 11 Apr Exam Coaching/CET Coaching

Sridhara KS

Tutor

Hello Aakash, Keep it simple intitally as to give 5 hours per day. Slowly and steadily increase that to around 12 hours perday at the end of your 1st PU. By the time you complete your second year, it should reach around 14 hours of work per day. 4 hours of work per day, does not mean it should be... read more

Hello Aakash,

Keep it simple intitally as to give 5 hours per day. Slowly and steadily increase that to around 12 hours perday at the end of your 1st PU. By the time you complete your second year, it should reach around 14 hours of work per day. 

4 hours of work per day, does not mean it should be continious at a stretch. it can be a chunk of 1 hour or 2 hours. But the commitment should be 5 hours per day and it should be consistent enough. 

All the best.  

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Lesson Posted on 26 Mar CBSE/Class 12/Science/Mathematics Exam Coaching/CET Coaching Exam Coaching/CET Coaching/Mathematics +10 CBSE/Class 11/Science/Mathematics Tuition/Class XI-XII Tuition (PUC) Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Crash Course Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Foundation Course Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Integrated Coaching Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Mains Coaching CBSE/Class 11 CBSE/Class 10/Mathematics IIT JEE/IIT - JEE Mains/Mathematics/Mathematical Induction less

Class 11th - Conic sections

Goodwill Gate2iit

Goodwill Gate2iit is a joint initiative from IIT graduates. We specialize in tutoring students for...

Determine the co-ordinates (x,y) of foci for given parabola. y2 = 2(x-1)
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Asked on 20 Feb Exam Coaching/CET Coaching

Which Kannada book a student needs to refer to get prepared for KCET for Kannada Exam?

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Lesson Posted on 08 Feb CBSE/Class 11/Science/Physics Exam Coaching/CET Coaching/Physics Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching

Rotation | Angular displacement, Velocity and acceelration

Vishesh Nigam

I am a Chemical Engineer and Khan Academy Talent Hunt Finalist (2017)(please watch my winning video below...

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Lesson Posted on 09 Feb CBSE/Class 11/Science/Physics Exam Coaching/CET Coaching/Physics Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/Physics +9 Exam Coaching/Foreign Education Exam Coaching/Advanced Placement Tests Coaching/Physics IIT JEE/IIT - JEE Advanced/Physics IIT JEE/IIT - JEE Mains/Physics Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Advanced Coaching Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Crash Course Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Foundation Course Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching/IIT JEE Integrated Coaching Exam Coaching/IIT JAM Coaching less

Rotation

Vishesh Nigam

I am a Chemical Engineer and Khan Academy Talent Hunt Finalist (2017)(please watch my winning video below...

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Lesson Posted on 02/11/2016 Tuition/Class XI-XII Tuition (PUC) Tuition/Class IX-X Tuition Tuition/Class VI-VIII Tuition +9 Exam Coaching/Engineering Entrance Coaching Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching Tuition/BBA Tuition Tuition/BCA Tuition Exam Coaching/CA Coaching Tuition/BCom Tuition Exam Coaching/CET Coaching Tuition/Class I-V Tuition Tuition/Nursery-KG Tuition less

Maths Home Tutor In Kolkata

Dipak S.

I starts my tuition from year 1994. After passing M.Sc Mathematics and BEd in year 2004 from Calcutta...

Study text book properly and give test regularly.
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