Coding and Decoding Questions

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

30 ÷ 2 - 10 x 6 + 5 = 35

Which of the following interchange of signs would make the equation correct?

5 + 3 x 8 ­ 12 ÷ 4 = 3

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

13 - 14 ÷ 30 x 7 + 15 = 13

In a certain code, TRIPPLE is written as SQHOOKD. How is EXOTIC coded in that code?

If "A" denotes "addition", "B" denotes "divided by", "C" denotes "multiplication" and "D" denotes "subtraction", then

96 B 12 C 4 A 8 D 32 = ?

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

If "$" means "added to", "@" means "divided by", "#" means "multiplied by" and "%" means "subtracted from", then

136 @ 17 # 0 $ 19 % 5 = ?

If 18!10 = 4, 10!4 = 3 and 4!8 = -2, then find the value of 16!18 = ?