If 'A' stands for ÷ , 'B' stands for × , 'C' stands for + and 'D' stands for − , what will come in place of the question mark ( ? ) in the following equation?
26  B  3  C  5  D  120  A  4 = ?

The correct option is 55.

Given representation of operations:

'A' stands for ÷
'B' stands for ×
'C' stands for +
'D' stands for −

The given mathematical expression is:

26 B 3 C 5 D 120 A 4 = ?

Substituting the given operational signs into the expression, we get:

26 × 3 + 5 − 120 ÷ 4

Now, solving the expression using BODMAS rule (Brackets, Orders, Division, Multiplication, Addition, Subtraction):

Step 1: Perform Division ($120÷4=30$)

26 × 3 + 5 − 30

Step 2: Perform Multiplication ($26\times 3=78$)

78 + 5 − 30

Step 3: Perform Addition ($78+5=83$)

83 − 30

Step 4: Perform Subtraction ($83-30=55$)

55

Thus, the value that will come in place of the question mark (?) is 55.