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JB-Franco

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Top Posts (39) All Questions Answers | Votes Newest

7 Sum of three dice is eleven Aug 16 '17
4 Prove the existence of a graph of 15 vertices with some vertices degree given Feb 13 '17
3 Verify that the following sequence defined recursively admits as closed formula another sequence Feb 18 '17
3 Let a relation on $\mathbb{Z}$ , check if reflexive, symmetrical, transitive, antisymmetrical, of order, of equivalence. Feb 19 '17
3 Two objects from the same company. What is the probability that the second object is defective, given that the first is defective. Sep 22 '17
3 Why is the cosine of a right angle, 90 degrees, equal to zero? Apr 22 '18
2 Lattice divisors of 165, ordered by divisibility. Draw Hasse diagram, get complements, check if distributive, check if Boolean. Feb 10 '17
2 The probability to obtain a $3$ is $p$, and the probability that there is at least one $3$ in four tosses is $0.9375$. Find $p$. Sep 13 '17
2 Probabilities that are “missing” in the normal distribution table Sep 4 '17
2 Let $A = \mathbb{R} \times \mathbb{R}$, and the operation $* : A \times A \rightarrow A$ on $A$. Check if associative, commutative, identity, inverse. Feb 16 '17
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