Question: Assume that you have two variables in a Perl script which are $count and $sequence. What is the single-line command that you should use in

Assume that you have two variables in a Perl script which are \$count and \$sequence. What is the single-line command that you should use in the Perl script to count the number of letter 'a' in the value saved in variable Ssequence and store the result to the variable $ count

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