Question

Cardinalul multimii D={x∈|N|x; 5, 16 ≤ x ≤ 36} este egal cu ...​

Answer 1

Explicație pas cu pas:

16<=x<=36 si x€N, rezulta ca x={16,17,18,19,...,34,35,36}

D={5, 16, 17,...,35, 36}

iar card D= 22 elemente

Answer 2

Răspuns:

card (D) = 22

D = {5, 16, 17, 18, 19,......., 35, 36}

Explicație pas cu pas:

D = {x ∈ NI | x; 5, 16 ≤ x ≤ 36}

16 ≤ x ≤ 36 ⇒

x∈{16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,31,33,34,35,36}

D = {5, 16, 17, 18, 19,......., 35, 36}

card (D) = 1 + [(36 - 16) : 1]

card (D) = 1 + (20 : 1) + 1

card (D) = 1 + 20 + 1

card (D) = 22 elemente