### Dictionary Rank of a Word | Permutations & Combinations

PERMUTATIONS & COMBINATIONS Rank of the word or Dictionary order of the English words like COMPUTER, COLLEGE, SUCCESS, SOCCER, RAIN, FATHER, etc. Dictionary Rank of a Word Method of finding the Rank (Dictionary Order) of the word  “R A I N” Given word: R A I N Total letters = 4 Letters in alphabetical order: A, I, N, R No. of words formed starting with A = 3! = 6 No. of words formed starting with I = 3! = 6 No. of words formed starting with N = 3! = 6 After N there is R which is required R ----- Required A ---- Required I ---- Required N ---- Required RAIN ----- 1 word   RANK OF THE WORD “R A I N” A….. = 3! = 6 I……. = 3! = 6 N….. = 3! = 6 R…A…I…N = 1 word 6 6 6 1 TOTAL 19 Rank of “R A I N” is 19 Method of finding the Rank (Dictionary Order) of the word  “F A T H E R” Given word is :  "F A T H E R" In alphabetical order: A, E, F, H, R, T Words beginni

# Resource Centre Mathematics

Mathematics worksheet, mathematics basic points and formulas, mathematics lesson plan, mathematics multiple choice questions

# CLASS IX

## MATHEMATICS FORMULAS  BASIC CONCEPTS

Basic concepts, Definitions, Formulas and full study material  in Mathematics ## Mathematics Assignments Class IX

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MCQ Class IX Chapter 1

MCQ Class IX Chapter 2

MCQ Class IX Chapter 4

## Lesson Plan Mathematics Class IX

Lesson Plan / E-Lesson Plan in Mathematics with useful Hyperlinks

These are useful and very interesting lesson plans with important hyperlinks and are very helpful in teaching mathematics. These Lesson Plans are also useful for the students.

# CLASS-X

## MATHEMATICS FORMULAS  BASIC CONCEPTS

Basic concepts, Definitions, Formulas and full study material  in Mathematics ## Mathematics Assignments Class - X

Assignment Ch-1 Real Numbers

Assignment Ch-2 Polynomials

Assignment Ch-3 Pair of Linear Equations in two Variables.

Assignment Ch-4 Quadratic Equations

Assignment Ch-5 Arithmetic Progression

Assignment Ch-6 Similarity of Triangles

Assignment Ch-7 Coordinate Geometry

Assignment Ch-8 Trigonometry

Assignment Ch-9 Application of Trigonometry

Assignment Ch-10 Circle

Assignment Ch-12 Area Related to Circle

Assignment Ch-13 Surface Area and Volume

Assignment Ch-14 Statistics

Assignment Ch-15 Probability

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# CLASS-XI

## DAV STUDY METERIAL For Class 11

Mathematics PPT, Assignment, worksheets and Videos

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# CLASS-XII

## MATHEMATICS FORMULAS  BASIC CONCEPTS

Basic concepts, Definitions, Formulas and full study material  in Mathematics ***************************

Common Errors Made by the students while solving the questions

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## Class - XII

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