Od zera do JavaScript developera - exercises

1. Write a JavaScript function to get all prime numbers from 0 to a 250;

2. Write a JavaScript program to find the area of a triangle where lengths of the three of its sides are a, b, c - where abc are configurable variables.

3. Write a JavaScript code that prints triangle based on 'size' variable. Size represents the last line of triangle.

  #
 ###   - triangle with size 5
#####


   #
  ###   - triangle with size 7
 #####
#######


    #
   ### 
  #####  - triangle with size 9
 #######
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