The Excel RANDBETWEEN function returns a random integer between two given numbers. RANDBETWEEN recalculates each time a worksheet is opened or changed.
Purpose: 
Get a random integer between two values
Return value: 
An integer/number
Syntax: =RANDBETWEEN (bottom, top)

Examples:
Below are basic examples of RANDBETWEEN formulas:   =RANDBETWEEN(1,9) // random number between 1 and 9
     =RANDBETWEEN(10,100) // random number between 10 and 100
      =RANDBETWEEN(-10,0) // random number between -10 and zero
RANDBETWEEN recalculates whenever a worksheet is opened or changed.
RANDBETWEEN returns integers. Use the RAND function to return random decimal values.
 
             
                                                 
                                                
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