X = odd numbers less than 30 A + 3,9, 15, 21, 27
B = 5, 15, 25
(a) Complete the Venn diagram to represent this information

numerele care apartin si lui a si lui b sunt:

15

a/b={3,9,21,27}

b/a={5,25}

b)

in total sunt 15 numere impare pana la 30(cazuri posibile)

numai 7 numere apartin lui AUB(cazuri favorabile)

probabilitatea= cazuri favorabile/cazuri posibile

probabilitatea=7/15

crown?

i dont get it. where are the "descriptions"?

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.