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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: Integer Solutions, Inclusion and Exclusion, Coefficient, Function, Unlimited Supply, Green Marbles, Generating Function, Even Nu, Odd Number, Same Number
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 + 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 − 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