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This isn't difficult. Where are you stuck? Do you understand what AND and OR do? (Presumably not, otherwise finding the answer would be trivial.)
Truth tables for AND and OR:
AND:
a b x
0 0 0
0 1 0
1 0 0
1 1 1
OR:
a b x
0 0 0
0 1 1
1 0 1
1 1 1
and these operations are performed on every bit. So, taking them right to left, 1 and 1 is 1, 0 and 1 is 0 etc, so the result is xxxxxx01; we then OR that with 11110000 which gives us xxxxxx01. You can fill in the x's now you know what to do.
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