Question

What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘÷’ are interchanged and ‘−’ and ‘×’ are interchanged? 11÷ 9 + 3 − 6 × 8 = ?

• A. 30
• B. 155
• C. 21
• D. 15

Answer 1

Answer:

C. 21

21 is the final value.

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Step 1: Interchange Symbols

Swap + with ÷, and − with × in the original equation:

• Original: $11 \div 9 + 3 - 6 \times 8 = ?$

• New: $11 + 9 \div 3 \times 6 - 8 = ?$

Step 2: Follow BODMAS / PEMDAS Order

• Division first:
  $9 \div 3 = 3$
  Equation becomes: $11 + 3 \times 6 - 8$

• Multiplication next:
  $3 \times 6 = 18$
  Equation becomes: $11 + 18 - 8$

• Addition next:
  $11 + 18 = 29$
  Equation becomes: $29 - 8$

• Subtraction last:
  $29 - 8 = 21$