Question

if a=1234 and b= 2345 then a uniun b is

Answer 1

Answer:

A ={1,2,3,4}

B={2,3,4,5}

AUB={1,2,3,4,5}

Answer 2

Answer:

(A∪B)={1,2,3,4,5} , |A∪B| = 5

Step-by-step explanation:

A={1,2,3,4}

∴|A| = 4

B={2,3,4,5}

∴ |B|=4

(A∩B)={2,3,4}

∴ |(A∩B)|=3

(A∪B)={1,2,3,4,5}

∴ |A∪B| = |A| + |B| - |(A∩B)|

∴ |A∪B| = 4+4-3 = 8-3 = 5

∴ |A∪B| = 5

please like and vote