How do i find the range of a graph

So lets say these are your inputs,

1 , 2 , 5 , 8 , 9 , 2 , 12

Take the largest number and subtract the smallest number. that is your range.

12 - 2 = 10.

your range would be 10

playboycarti! *

she tryna be crate.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this