Question

scrieti in trei moduri urmatoarele multimi : a) multimea cuburilor perfecte mai mici decit 32; b) multimea nr divizibile cu 3 cuprinse intre 15 si 31 ; c) multimea nr impare cuprinse intre 14 si 26.

Answer 1

a) {1^3,2^3,3^3}/ {1,8,27}/{1*1^2,2*2^2,3*3^2}
b) {18,21,24,27,30}/{6*3,7*3,8*3,8*3,10*3}/{2*9,1*21,6*4,27*1,6}
c){15,17,19,21,23,25}/{5*3, 20-3, 14+5,7*3,20+3,5*5}/ {10+5,9+8,20+1,25-2,25*1}