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If the signs are interchanged as follows: ‘+’ means ‘×’, ‘×’ means ‘−’, ‘−’ means ‘+’, and ‘÷’ means ‘÷’, which equation is incorrect after applying these symbol transformations?

1. 8 + 2 × 3 − 4 = 17
2. 6 × 4 + 2 ÷ 2 = 14
3. 10 − 5 + 3 × 2 = 23
4. 12 ÷ 3 + 2 − 1 = 9

Correct answer: 6 × 4 + 2 ÷ 2 = 14

Solution

After replacing the symbols, only one equation fails to satisfy the stated equality. The incorrect one is the option whose transformed expression does not evaluate to the given result.

Related SSC CGL (Prelims) General questions

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