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If + means тИТ, тИТ means ├Ч, ├Ч means ├╖, ├╖ means +, then what will come in place of the question mark (?) in the following equation? 62тИТ2├╖7+14├Ч7=?
129
133
143
131
129
Write down the expression with the original operators, substitute each operator according to the given rule, and then apply BODMAS rule strictly.
Write down the expression with the original operators, substitute each operator according to the given rule, and then apply BODMAS rule strictly.
Step 1: Note the given replacements
The question specifies: '+' means '-', '-' means 'x', 'x' means '/', '/' means '+'.
Step 2: Substitute the operators in the equation
Given expression: 62 - 2 / 7 + 14 x 7. Substituting: '-' becomes 'x', '/' becomes '+', '+' becomes '-', and 'x' becomes '/'. New expression: 62 x 2 + 7 - 14 / 7.
Step 3: Apply BODMAS rule
First perform division: 14 / 7 = 2. Next perform multiplication: 62 x 2 = 124. The expression becomes: 124 + 7 - 2.
Step 4: Perform Addition and Subtraction
124 + 7 = 131. Then, 131 - 2 = 129.
B: 133 is incorrect as it results from miscalculating intermediate steps. C: 143 is incorrect due to arithmetic errors in multiplication/division. D: 131 is incorrect because the final subtraction step was missed or miscalculated.
A is correct because substituting the operators according to the given rules yields 62 x 2 + 7 - 14 / 7, which simplifies via BODMAS to 124 + 7 - 2 = 129.
Always write down the substituted equation clearly before applying BODMAS to avoid sign confusion.
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