Civil Service Exam Reviewer · Logical Reasoning · hard
If '+' means '−', '−' means '×', '×' means '÷', '÷' means '+', what is the value of 6 × 2 − 20 ÷ 20 − 4?
- 7
- 320
- 140
- 142
Answer
C. 140
Solution
Replace the symbols: 6 ÷ 2 × 20 + 20 × 4. Following the order of operations (× and ÷ first, then + and −), the value is 140.
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