Question

dau coroana celor care ma ajuta

Answer 1

1) A={1,2,3,5}, B={0,2,4,6}, C={1,3,6,7,8,9}

2) A∪B=B∪A={0,1,2,3,4,5,6}

A∩B=B∩A={2}

A\B={1,3,5}

(A∪B)∪C={1,2,3,4,5,6,7,8,9}

B\A={0,4,6}

3) c.m.m.d.c= 2*3=6

182=2*3²

42=3*7*2

4) c.m.m.m.c.=2⁴*5*3=16*5*3=80*3=240

120=2³*5*3

48=2⁴*3

5) 35m/25km=35m/25000m=0.0014

24dm/36mm=2400mm/36mm=66,(6)

6) 15*400/100=60

7) Produsul extremilor este egal cu produsul miezilor.

7x=4*2,1

x=8.4/7=1.2