we need numbers so we can do maths and we know when our birthday is and how old we are
The need of numbers in everyday life is obvious. When you purchase something, who will count all the money? That is just one of the many answers there are.
5, one of the five is a multiple of 5, if it's the last one then you need 5 numbers e.g 3,4,5,6,7 10 121,122,123,124,125
You need at least two numbers to find an LCM. And they need to be whole numbers, not fractions.
5
Every sixth number will be a multiple of 6, so you need at least six consecutive numbers to guarantee that one of them will be divisible by 6.
Counting your money would be one way.
it depends what is meant by everyday life but I round them up when I don't need an exact number and if it is easier to remember whole numbers
Six of them.
One example of a real life situation you will need to know how to use exponential numbers is if you go to the doctor and need to know your blood count. The numbers of the red and white cells would be expressed in the form of scientific notation.
Everywhere, you say I want one apple, or twocookies; both rational numbers.
No but do you because i need one
Three: Two ordinary numbers and one star number, or One ordinary number and two star numbers, or Three ordinary numbers