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RD Sharma - Mathematics

16. Permutations

1. Sets
2. Relations
3. Functions
4. Measurement of Angles
5. Trigonometric Functions
6. Graphs of Trigonometric Functions
7. Values of Trigonometric Functions at Sum of Difference of Angles
8. Transformation Formulae
9. Values of Trigonometric Functions at Multiples and Submultiple of an Angles
10. Sine and Cosine Formulae and their Applications
11. Trigonometric Equations
12. Mathematical Induction
13. Complex Numbers
14. Quadratic Equations
15. Linear Inequations
16. Permutations
17. Combinations
18. Binomial Theorem
19. Arithmetic Progressions
20. Geometric Progressions
21. Some Special Series
22. Brief Review of Cartesian System of Rectangular Co-ordinates
23. The Straight Lines
24. The Circle
25. Parabola
26. Ellipse
27. Hyperbola
28. Introduction to 3-D Coordinate Geometry
29. Limits
30. Derivatives
31. Mathematical Reasoning
32. Statistics
33. Probability

Exercise 16.1

1 2 3 A 3 B 3 C 4 A 4 B 4 C 4 D 5 A 5 B 6 7 8 9 10 11 A 11 B 12

Exercise 16.2

1 2 3 4 5 6 7 8 9 10 11 123 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Exercise 16.3

1 A 1 B 1 C 1 D 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Exercise 16.4

1 2 A 2 B 2 C 3 4 5 6 A 6 B 6 C 6 D 7 A 7 B 7 C 7 D 7 E 8 9 10 11 A 11 B 11 C 12

Exercise 16.5

1 A 1 B 1 C 1 D 1 E 1 F 1 G 1 H 1 I 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Very Short Answer

1 2 3 4 5 6 7 8 9 10 11 12

MCQ

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Q. 165.0( 1 Vote )

Mark the correct

Class 11th RD Sharma - Mathematics 16. Permutations

Answer :

The product of r consecutive positive integers is

=1∙2∙3∙4∙…∙(r-4)∙(r-3)∙(r-2)∙(r-1)∙r

= r!

So, the product of r consecutive positive integers is divisible by r!.

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