#1) Variable - object with single value -> x=3, y=b+c where b=2.5 and c= 2.3

#2) Vector - is a collection of elements of the same data type.
         
          #- Allows operations to be performed on every element.
          #Example : {1,2,3}, {"Jecy","Bethany", "Alison"}, {10.4,7.8,1.1}
          #- You can have vector of many data types
          
#3) Sequene - is a vector made of numbers
           #- Has a fixed pattern
           #Example:{1,4,7},{5.1,6.2,7.3,8.4}, {1+2i,2+3i,3+4i}
           
#4) Array - is a multidimensional series of data
          #-each element has same data types
          #-No. of dimensions >=10
          
#5) Matrix - is a two dimensional array of the same data type
           #-Allows operations to be performed on every object
           #Example : 3  5
           #          1  7
           #          2  4
           
#6)  Factor - is like a vector where distinct objects are stored as levels
            #- the factor returns the objects as well as the levels
            #-can take any data type
            
#7) List -it is like a vector
         #-each component of list can be sequence
         #-it can contain components of different data types including a list
         
#8) Data frame  - is a matrix like structure
                #- is a table of values of different data type.
                
#9) Table - is a count of distinct levels of two or more factors