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If A means +, B means тИТ, C means ├Ч, D means ├╖, then what will come in place of the question mark (?) in the following equation? 91┬аD┬а13┬аB┬а4┬аA┬а3┬аC┬а2=?
8
9
7
10
9
Substitute the symbols with their corresponding mathematical operators first, then apply standard BODMAS rules (Brackets, Orders, Division, Multiplication, Addition, Subtraction).
Substitute the symbols with their corresponding mathematical operators first, then apply standard BODMAS rules (Brackets, Orders, Division, Multiplication, Addition, Subtraction).
Step 1: Understand the Given Symbol Substitutions
The problem defines the coding rules for symbols as: A means +, B means -, C means x, and D means /.
Step 2: Substitute Symbols into the Equation
Replace the letters in the expression '91 D 13 B 4 A 3 C 2' with their respective mathematical operators: 91 / 13 - 4 + 3 x 2.
Step 3: Apply BODMASRule (Division тЖТ Multiplication тЖТ Addition тЖТ Subtraction)
First perform division and multiplication: 91 / 13 = 7 and 3 x 2 = 6. The expression simplifies to: 7 - 4 + 6.
Step 4: Perform Addition and Subtraction
Perform addition and subtraction from left to right: 7 - 4 = 3, then 3 + 6 = 9.
A: 8 is incorrect because the final computed value is 9. C: 7 is incorrect due to arithmetic or order of operations error. D: 10 is incorrect as it results from incorrect sequence application.
B is correct because replacing the symbols according to the given rules gives 91 / 13 - 4 + 3 x 2, which simplifies via BODMAS to 7 - 4 + 6 = 9.
Always convert the entire expression first before doing any calculation, and strictly follow BODMAS to avoid sign errors.
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