以下公式中哪个是对光标左侧的连续数值单元格中的数据进行求和运算?
         
                         SUM(LEFT)    
       
                         SUM(RIGHT)    
       
                         AVERAGE(LEFT)    
       
                         AVERAGE(RIGHT)    
      
 
MIN(A2,C4)该函数中的参数包含几个单元格?
 
MIN(A2:C4)该函数中的参数包含几个单元格?
 
  如图所示:{}内公式的计算结果? 
  
 
 
 
  如图所示: 
  
 
 
         
                         SUM(B1:C3)    
       
                         SUM(1B:3C)    
       
                         =SUM(B1:C3)    
       
                         =SUM(B2:C3)    
      
 
下列公式书写正确的是?
         
                         SUM(LEFT)    
       
                         =sum(left)    
       
                         =A1*D1    
       
                         =MAX(A1:3D)    
       
                         =AVERAGE(right)    
       
                         a1-b2