Coding and Decoding Questions

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

12 + 8 - 25 ÷ 10 x 18 = 14

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

90 ÷ 10 + 5 - 6 x 4 = 28

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

21 + 16 x 35 - 70 ÷ 20 = 9

If the mathematical operator, '+' means 'x', '/' means '-', '-' means '+', and 'x' means '/', then the value of 11 +14 x7- 5 / 29 is

If 7*7 = 140, 6*1 = 70 and 3*5 = 80, then find the value of 4*4 = ?

Which one of the following interchanges in signs and numbers would make the given equation correct?

3 + 5 - 2 = 4

If S means '+', L means 'x', U means '/' and K means '-', then the value of

21 S 1 U 7 L 15 U 6 L 14 K 55

If 3!5 = 30, 6!1 = 12 and 5!8 = 80, then find the value of 2!2 = ?