Mathematical Operations Questions

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 38 x 2 – 6 + 19 ÷ 35 = ?

If (3)2 @ 1 * 7 = 98 and (4)2 @ 2 * 16 = 178, then (5)2 @ 3 * 9 = ?

If (2)#* 4 = 2 and (4)#* 4 = 16, then what is the value of A in (6)#* A = 18?

If 3 # 4 % 8 = 6 and 9 % 4 # 3 = 12, then 12 % 6 # 24 = ?

Select the Missing number?

$$\begin{gathered} If (─) stands for division, (+) stands for multiplication, (÷) stands for subtraction and \\ (×) stands for addition, which one of the following equations is correct? \end{gathered}$$

If 13*45 = 29 ,
24*58 = 41 ,
74*32 = 53 ,
what should 97*47 be?

Find the missing number?