Answer to Question #16642 in Discrete Mathematics for Lelouch Vi Brittania

Question

Evaluate the following with explanation:
A. 11^2012 mod 10
B. 29^205 mod 10


C. ⇩⇩⇩

20
Σ x!mod 5
x=1


D. Draw diagram for the following relation aRb iff a is congruent to b mod 3 on the set {0,1,2,3,4,5}



E. ⇩⇩⇩

5
Σ n(n!)
i=1


F.⇩⇩⇩

5
Σ i^3
i+1


G. Show that the sum of consecutive positive integers is equal to n/2(n+1),∀n∈ N.

Answer 1

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