Ex 1-1 Prime factorisation and index notation
Definition of a prime number:
Prime numbers have only 2 factors.
Prime numbers can only be divisible by 1 and itself.
Amendment:
Solution to question 8 should include clearer explanation like the following 2 examples.
E.g 14 is a composite number as it has more than two factors.
The factors are 1,2,7 & 14.
E.g Sqrt 19 = 4.35...,
19 is not divisible by all prime factors less than 4.35..
==> 19 has no other factors except 1 and 19.
==> 19 is a prime as it has only 2 factors.
Comments
Post a Comment