in the exam they ask you what a real number(for example), i get confused
can someone please post all of the maths definations
Natural numbers - positive whole numbers starting from 1
Integers - negative and positive whole numbers
Real numbers - negative and positive numbers - practically everything, even something such as "3.5 - that's a real number"!
Prime numbers - numbers that only can be divided by itself and 1
Factors - A factor of a number is a number that divides into the number, for example, 3 and 4 are factors of 12.
Composite numbers - numbers that have more than 2 factors
Less Stress More Success JC Maths HL Paper 1 & Paper 2 (separate books) has all the definitions you will need
the books never help, maths is all practise, the more maths you practise the better you get :).