If '+' means '×', '-' means '÷', '×' means '-' and '÷' means '+', then choose the correct expression from the following options.
If '+' means '×', '-' means '÷', '×' means '-' and '÷' means '+', then choose the correct expression from the following options.
A30−3÷7+2×21=4
B39−13×6+3÷19=3
C9+4÷8+3×10=50
D16+2÷8−4×9=30
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correct answer is: c
Explanation: After replacing the symbols according to the given rules, OPTION c evaluates correctly to 50.
- OPTION a: 30 ÷ 3 + 7 × 2 − 21 = 3 ≠ 4
- OPTION b: 39 ÷ 13 − 6 + 3 + 19 = 19 ≠ 3
- OPTION c: 9 × 4 + 8 × 3 − 10 = 50 = 50
- OPTION d: 16 × 2 + 8 ÷ 4 − 9 = 25 ≠ 30
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