Sunday, 26 June 2016

Arithmetic and Geometric Progression Exercises

Exercises

Question 1

The first term of an arithmetic sequence is 4 and the tenth term is 67.
What is the common difference?


Question 2

 What is the thirty-second term of the arithmetic sequence -12, -7, -2, 3, ... ?

Question 3 

 What is the fiftieth term of the arithmetic sequence 3, 7, 11, 15, ... ?



Arithmetic and Geometric Progression

FORMULA


Friday, 24 June 2016

Permutation and Combination Exercises

Exercises

Question 1

How many permutations of 3 different digits are there, chosen from the ten digits 0 to 9 inclusive?
 

Question 2

How many permutations of 4 different letters are there, chosen from the twenty six letters of the alphabet?
 

Question 3 

How many different committees of 5 people can be chosen from 10 people?




Permutation and Combination

What's the Difference?



I’ve always confused “permutation” and “combination” — which one’s which?



Saturday, 18 June 2016

Indices Exercises

Exercises


Indices and the Law of Indices

Introduction



 

Indices are a useful way of more simply expressing large numbers. They also present us with many useful properties for manipulating them using what are called the Law of Indices.

 
 
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