add week 49 solution

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diff --git a/challenge-049/steven-wilson/perl/ch-1.pl b/challenge-049/steven-wilson/perl/ch-1.pl
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+#!/usr/bin/env perl
+# Steven Wilson
+# Challenge 049 Task #1
+# 24 Feb 2020
+
+# Smallest Multiple
+
+# Write a script to accept a positive number as command line argument
+# and print the smallest multiple of the given number consists of digits
+# 0 and 1.
+
+# For example:
+# For given number 55, the smallest multiple is 110 consisting of digits
+# 0 and 1.
+
+use strict;
+use warnings;
+use feature qw/ say /;
+
+my $number     = $ARGV[0];
+my $mulitplier = 1;
+my $smallest_multiple;
+
+while (1) {
+    my $mulitple = $mulitplier * $number;
+    if ( $mulitple =~ /^[01]*$/ ) {
+        $smallest_multiple = $mulitple;
+        last;
+    }
+    $mulitplier++;
+}
+
+say $smallest_multiple;