Find (101\(_2\))\(^2\), expressing the answer in base 2.

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Mathematics WAEC 1995

Find (101\(_2\))\(^2\), expressing the answer in base 2.

  • 10101
  • 11001 checkmark
  • 10010
  • 11101
  • 10110

The correct answer is: B

Explanation

You can convert it to base 10 and square, then re-convert it after the operation. 

OR

You can multiply it straight applying the rules of binary multiplication.

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