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68 × 991. 67522. 66323. 67624. 67425. None of these.

Answer» Correct Answer - Option 5 : None of these.

Concept used:-

Multiplying two digit numbers by 99.

Method:-

  • Subtract 1 from the given number. This will be left part of our answer.
  • Now subtract each digit from 9 to get the right part of the answer.
  • Add +1 in last digit on right part

Calculation:-

Let answer be AB

A = 68 - 1 = 67

B = 99 - 68 + 1 = 32

Hence 6732 is our answer.



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