Question

If '+' means '−', '−' means '÷', '÷' means '×' and '×' means '+', what will come in place of the question mark (?) in the following equation?

64 + 32 − 8 × 11 ÷ 3 = ?

• A. 39
• B. 93
• C. 90
• D. 35

Answer 1

Answer:

B. 93

The value that will replace the question mark is 93.

1. Substitute the mathematical signs as defined:

• + becomes -

• - becomes ÷

• × becomes +

• ÷ becomes ×

The original equation is:
$64 + 32 - 8 \times 11 \div 3$

The new equation becomes:
$64 - 32 \div 8 + 11 \times 3$

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2. Solve using BODMAS / PEMDAS rules:

• Division ($32 \div 8$):
  $64 - 4 + 11 \times 3$

• Multiplication ($11 \times 3$):
  $64 - 4 + 33$

• Subtraction and Addition:
  $60 + 33 = 93$