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Informally but clearly describe multitape Turing machines that accept each of the languages of 

  1.  The set of strings with an equal number of $0's$ and $1's.$
  2.  $\left\{a^{n}b^{n}c^{n}\ \mid n\geq 1\right\}.$
  3. $\left\{ww^{R} \ \mid \  \text{w is any string of 0's and 1's}\right\}.$

Try to make each of your Turing machines run in time proportional to the input length.

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