7. IfACB, n(A) = 12 and n(B) = 20. then the value of n(B - A) 1
A) 32
B) - 8
D) - 32
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1
Answer:
8 is the correct answer
Step-by-step explanation:
n(B-A) 1
n(20-12)1
n=8×1
n=8
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