Question

cine ma ajuta primul dau coroana stea inima.va roggg repede​

Answer 1

Răspuns:

   A={x|x∈N, x≤7} ⇒ A={0, 1, 2, 3, 4, 5, 6, 7}

      B={x|x∈N, 4≤x≤9} ⇒ B={4, 5, 6, 7, 8, 9}

      D={x|x∈N, 11≤x<23} ⇒ D={11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22}

      E={x|x∈N, 18 se împarte exact la x} => x∈D₁₈;  E={1, 2, 3, 6, 9, 18}

      F={x|x∈N, x impar, x<13} ⇒ F={1, 3, 5, 7, 9, 11}

2) a) A={x∈N| x par, x<14} ⇒ A={0, 2, 4, 6, 8, 10, 12}

   b) B={x∈N| x impar, x<14} ⇒ B={1, 3, 5, 7, 9, 11, 13}

   c) C={x∈N| x par, x are două cifre, x∈M₅} ⇒ C={10, 20, 30, 40, 50, 60, 70, 80, 90}