Question

Determinati numarul intreg x stiind ca multimea A={-11,-10,-9,...,x} are 24 de elemente .Scrieti o ecuatie cu necunoscuta x care sa exprime relatia din enunt.

Answer 1

x - (-11) + 1 = 24      x + 12 = 24    x = 12
A = {-11, -10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12}