Previous Year Questions

To solve the equation 15 X 9+7÷26−13=?

we first handle the given symbol interchanges:

· ÷ and − are interchanged, so ÷ becomes −, and − becomes ÷.

· X and + are interchanged, so X becomes +, and +becomes X .

Now, rewrite the equation with the interchanged symbols:

15+9 X 7−26÷13=?

Step 1: Follow the BODMAS rule (Bracket, Order, Division/Multiplication, Addition/Subtraction).

1) Division first:

26÷13=2

So the equation becomes:

15+9 X 7−2

2) Multiplication next:

9 X 7=63

So the equation becomes:

15+63−2

Final Answer:

The value of ??? is 76.