Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 25 *5 * 10 * 2 * 4 * 10

If  ‘+’  means ‘÷’,   ‘ ̶ ’  means  ‘+’,   ‘×’ means  ‘ ̶ ’  and   ‘÷’  means  ‘×’,   what will be the value of the following expression?
 [{(38 × 23) - (4 ÷ 3)} + (6 - 3)] ÷ 2

After interchanging the two numbers 3 and 6, what will be the value of the given expression?

12 × 3 ÷ 6 + 8 – 2

If ‘F’ means ‘+’ , ‘P’ means ‘x’, ‘T’ means ‘÷’ and ‘K’ means ‘-‘ then 40 T 8 F 16 P 4 K 13=?

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

If 1 + 4 = 9, 2 + 8 = 18, 3 + 6 = 15 then 7 + 8 =?

In a certain language, if '+' means 'subtraction', '×' means 'division', '÷' means 'addition', and '–' means 'multiplication', then find the value of the following expression (BODMAS rule does not apply in that language).
 8 ÷ 16 × 4 + 2 – 3

After interchanging which two signs will the value of the given expression be ‘356’?

133 + 49 – 16 ÷ 2 × 34

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

If 98 – 39 – 27 = 31, 87 – 38 – 34 = 20, then 79 – 25 – 12 = ?