Answer:
36
Step-by-step explanation:
Rewrite this as 
(2)(3)(√3)(√12), or
    6 * √36, or
    6  *  6  = 36
 
        
             
        
        
        
The number is 6 because 14+6=20 and 6 is less than 14. Hope this helps.
 
        
             
        
        
        
Ten x plus four divided by seven 
        
                    
             
        
        
        
Mean = total score : frequency
mean x frequency = total score
so
83 = total score : 6
83 × 6 = total score
498 = total score
so the sum of the 6 test scores is 498