Coding and Decoding Questions

If SON = 678 and TEN = 948, then STONE =

 If 3@7 = 20, 8@1 = 18 and 6@5 = 22, then find the value of 4@4 = ?

If "A" means "minus", "B" means "divided by", "C" means "plus" and "D" means "multiplied by", then

54 B 6 A 4 C 2 D 5 = ?

If "A" means "subtraction", "B" means "division", "C" means "addition" and "D" means "multiplication", then

411 B 3 A 29 C 53 D 20 = ?

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

20 ÷ 14 + 5 x 20 - 2 = 56

If UPTO is coded as PTUO, how is CANT coded?

Select the missing term based on the given related pair of terms.

COULD : BNTKC :: MOULD : ___

If 5#5 = -25, -4#-3 = -12 and 3#-3 = 9, then find the value of 4#5 = ?