Examination Sheet № 11

Name: Surname: Group:

 

Truth Tables of basic logical operations. The number of all compound propositions consisting of n elementary compositions. Prove this by mathematical induction. Construct the truth table for the proposition .
Recurrence relations. Solution of a recurrence relation. The tower of Hanoi. Codeword enumeration.
Construct the DNF, CNF and a polynomial for a proposition F(p,q,r) which is true iff (p,q,r) are from {(1, 1, 0), (1, 0, 0), (0, 0, 1), (0, 0, 0)}
How many ways to select 23 ordered elements from a set consisting of 54 elements are there, if repetition is not allowed?
Find a sequence {an : n = 0, 1, …} satisfying the recurrence relation xn + 6 = –6(xn–1 – 1) – 9xn–2, with the initial conditions a0 =1, a1 = –9.