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What will come in the place of '?' in the following equation, if '÷' and '+' are interchanged and 'x' and -' are interchanged? 48 ×16-20÷21+7=?

A259

B269

C-269

D-259

Answer:

C. -269

Read Explanation:

Apply the given interchanges:

  • ÷ and + are interchanged

  • × and − are interchanged

    Original expression:

48×16−20÷21+748 \times 16 - 20 \div 21 + 7
After interchanging signs:

48−16×20+21÷748 - 16 \times 20 + 21 \div 7

Solve using BODMAS:

16×20=32016 \times 20 = 320
21÷7=321 \div 7 = 3
Now:
48−320+348 - 320 + 3
48−320=−27248 - 320 = -272
−272+3=−269-272 + 3 = -269

Final Answer: -269

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