Question

5. If n(A) = 3, n(B) = 6 and A CB. Then the number of
elements in AUB is equal to
(a) 3
(b) 9
(c) 6 (d) None of these
If and Rare
Tataban​

Answer 1

Answer: c) 6

Step-by-step explanation:

n(A) = 3

n(B) = 6

It is given that A is a subset of B which means that all elements of A are present in B.

n(A∪B) = n(A) + n(B) - n(A∩B) ----------- [ As A⊂B ]

            = 3+6 - 3 = 6

MARK AS BRAINLIEST ANSWER...

Answer 2

Answer:

mark me as brainliest......... plz