Which two symbols should be interchanged to make the following equation correct.
6 ÷ 5 + 12 × 4 – 7 =26

If two symbols, '÷' and '×' and the two numbers '2' and '8' are interchanged, what will be the value of the following equation?
4 ×8÷2=?

If '+' means '÷' ;  ‘÷’means ' - ' ; ' - ' means '×' ; '×' means '+' , then
8 + 2÷ 3- 4 x 6 =? 

If - stands for division, + for multiplication, ÷ for subtraction and × for addition, then which one of the following equations is correct? 

In the following question, by using which mathematical operators will the expression become correct?
15 3_4_20 

Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
555 * 5 * 11 * 25 * 4  

Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
2 x 2 = 64, 3 x 1 = 27, 6 x 2 = 1728, 3 x 3 = ?

Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
33 * 11 * 3 * 6 = 115