Exams › SSC CGL (Prelims) › Reasoning

What will come in place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '+' are interchanged? 152 + 6 + 1617 × 7 - 77 = ?

1. 587
2. 578
3. 758
4. 785

Correct answer: 758

Solution

Using the interchange rule, the operators are replaced as instructed and the expression is then evaluated in the new form. The final value comes out to 758.

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