Expand (a) (a+ b) (b) (1+x) (c) (p+q) 4 Primary and secondary routes connecting two computers need to be chosen. Two primary routes are needed from eight which are suitable and three secondary routes must be chosen from four available. In how many ways can the routes be chosen? 5 A combination lock can be opened by dialling three correct letters followed by three correct digits. How many different possibilities are there for arranging the letters and digits? Is this more secure than a lock which has seven digits? Is the word 'combination' being used correctly? 3 The expansion of (a+b)" where n is a positive integer may be written with the help of combination notation. (a + b)" = d" +

Expand (a) (a+ b) (b) (1+x) (c) (p+q) 4 Primary and secondary routes connecting two computers need to be chosen. Two primary routes are needed from eight which are suitable and three secondary routes must be chosen from four available. In how many ways can the routes be chosen? 5 A combination lock can be opened by dialling three correct letters followed by three correct digits. How many different possibilities are there for arranging the letters and digits? Is this more secure than a lock which has seven digits? Is the word 'combination' being used correctly? 3 The expansion of (a+b)" where n is a positive integer may be written with the help of combination notation. (a + b)" = d" +

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Description: EXERCISES 29.9Expand(a) (a+ b) (b) (1+x)6 (c) (p+q)$Primary and secondary routes connecting twocomputers need to be chosen. Two primary routes areneeded from eight which are suitable and threesecondary routes must be chosen from four available.In ho

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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