Question

N(a) = 45, n(b) = 35 and n(a∪b) = 70, find: (a) n(a∩b) (b) n(a−b)

Answer 1

Step-by-step explanation:

N(aUb) = N(a) + N(b) - N(anb)

70=45+35-N(anb)

N(anb) = 10

N(a-b) = N(a) - N(anb) = 45-10 =35

Answer 2

Formula

n(a)+n(b)= n(a U b) +n(a intersection b).

HOPE IT MAY HELP U

MARK AS BRAINLIST ✌️❤️✌️❤️