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

Maths Videos-cbse mathematics

Interesting Videos on Number System, Quadratic Equations, Solid Geometry, Divisibility Test, Quadrilateral, Limits and continuity and circle

Number System:- 
  Here we get complete explanation of all types of numbers used in mathematics, their definition with examples. Like:- Natural Number, Whole Number, Integers, Rational Number, Irrational Number and Real number etc.

Maths Videos-cbse mathematics

Quadratic Equations:-
This video is based on the quadratic equation and their nature of their roots. Its contains the  Definition, General Quadratic Equation, Nature of roots, Relationship between the roots and coefficients, discriminant, quadratic formula and most important is method of completing the square. 

Maths Videos-cbse mathematics

Solid Geometry:- 
It contains the curved surface area, total surface area and volume of all types of solid figures like cube, cuboid, cylinder, cone, sphere, hemi-sphere, frustum of cone etc. in an interesting way.

Maths Videos-cbse mathematics

Divisibility Test:- 
 This video explains the divisibility tests by 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11.

Maths Videos-cbse mathematics

 Here we get the complete information about the family of quadrilaterals, their types and their properties. Eg:- Trapezium, Parallelogram, Rectangle, Rhombus and square.

Maths Videos-cbse mathematics

Here we find the definitions of all terms related to the circle like definition of circle, radius, diameter, chord, sector, segment, Properties of circle, cyclic quadrilateral and their properties

Basic concepts and formulas on limit and continuity.

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