Question

If n(A) = 10, n(B) = 15 and n(A U B) = x, then

Answer 1

Answer:

A UNION B MAY HAVE 25 TERMS IT IS DEPENDENT ON THE NUMBER WHICH GAVE IN SET.

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Answer 2

Answer:

Since n(AuB)=n(A)+n(B)-n(AnB)

If both are disjoint then n(AnB)=0

Then n(AuB)=15+10=25

If A. is subset of B then

n(AnB)=10

so n(AuB)= 15+10-10=15

Hence 15 ≤ n(AuB) ≤ 25

Step-by-step explanation: