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This is the Exam of Discrete Mathematics which includes Recurrence Relation, Space Is Available, Answer, Number of Ways, Sum of Odd Integers, By Hand, Solution, Various Walks, Provided etc. Key important points are: Standard Deck, Cards Contains, Cards Numbered, Numbered Card Appears, Spades, Hearts, Diamonds, Clubs,, Probability, Students Seat
Typology: Exams
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N (¯c 1 , ¯c 2 c¯ 3 · · · ¯ct) = N − [N (c 1 ) + N (c 2 ) + · · · + N (ct)]
+[N (c 1 c 2 ) + N (c 1 c 3 ) + · · · + N (c 1 ct) + · · · + N (c 2 c 3 ) + · · · + N (ct− 1 ct)] −[N (c 1 c 2 c 3 ) + N (c 1 c 2 c 4 ) + · · · + N (c 1 c 2 ct) + N (c 1 c 3 c 4 ) + · · · +N (c 1 c 3 ct) + · · · + N (ct− 2 ct− 1 ct)] + · · · + (−1)tN (c 1 c 2 c 3 · · · ct) = S 0 − S 1 + S 2 − S 3 + · · · + (−1)tSt
Em = Sm −
( m + 1 1
) Sm+1 +
( m + 2 2
) Sm+2 − · · · + (−1)t−m
( t t − m
) St
Lm = Sm −
( m m − 1
) Sm+1 +
( m + 1 m − 1
) Sm+2 − · · · + (−1)t−m
( t − 1 m − 1
) St
If n ∈ Z+, (^) ( −n r
( n + r − 1 r
)
For all m, n ∈ Z+, a ∈ R,
(1 + x)n^ =
( n 0
)
( n 1
) x +
( n 2
) x^2 + · · · +
( n n
) xn
(1 − xn+1) (1 − x) = 1 + x + x^2 + x^3 + · · · + xn
1 (1 − x)
= 1 + x + x^2 + x^3 · · · =
∑^ ∞
i=
xi
1 (1 + x)n^
( −n 0
)
( −n 1
) x +
( −n 2
) x^2 + · · ·
∑^ ∞
i=
( −n i
) xi
( n + 1 − 1 i
) x + (−1)^2
( n + 2 − 1 2
) x^2 + · · ·
∑^ ∞
i=
(−1)i
( n + i − 1 i
) xi
1 (1 − x)n^
( −n 0
)
( −n 1
) (−x) +
( −n 2
) (−x)^2 + · · ·
∑^ ∞ i=
( −n i
) (−x)i
( n + 1 − 1 i
) (−x) + (−1)^2
( n + 2 − 1 2
) (−x)^2 + · · ·
∑^ ∞
i=
( n + i − 1 i
) xi
v − e + 2 = r, 3 r ≤ 2 e, e ≤ 3 v − 6 ∑ deg(v) = 2|E|,
∑ deg(Ri) = 2|E|