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Unformatted text preview: the alphabet (A,B,C) which: (a) have exactly one A (b) have no A 1 2 (c) have at least one A (d) have exactly 3 A’s and exactly 3 B’s (e) have at least one of each of the three letters (3) How many binary strings of length 8 have: (a) exactly 5 ones (b) exactly 3 ones in the leftmost 4 places (c) more ones than zeros (4) Find the coeﬃcient of x 1 0 in (2 + x ) 40...
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- Spring '09
- Math, Binary numeral system, Decimal, Indistinguishable Objects