Let A, B and C be sets such that |A| = 12, |B| = 7, |C| = 10. (a) If |A ∩ B| = 0, how many ways can we choose two elements, one from
A and one from B?

(b) If |A ∩ B| = 4, what is |A ∪ B|?

(c) If |A ∩ B| = 0, |A ∩ C| = 0, and |B ∩ C| = 1, how many ways can
we choose three distinct elements, one from A and one from B and one

from C?​

b. x- 48 =120

step-by-step explanation:

d is the answer

step-by-step explanation:

step-by-step explanation:

one day the were 5 ducks, and their king told them to multiply their kingdom. so each went their own seperate way and met 4 other ducks on their journey.

when the ducks returned to their kingdom, it was discovered that there were 5 groups of 5 ducks. when the kind counted the number of ducks in total (including the ones he sent out earlier) he counted 25.

therefore 5 times 5 is 25.

the end. : )