Question: ( 3 points ) How many 7 - bit binary strings are there subject to each of the following restrictions? No restrictions. 1 2 8

(3 points)
How many 7-bit binary strings are there subject to each of the following restrictions?
No restrictions.
128
The string starts with 001.
The string starts with 001 or 10.
The string has exactly 40's.
The string has exactly 40's and the first bit is 1.
( 3 points ) How many 7 - bit binary strings are

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