A) 0.18
B) 1.8
C) 0
D) 2.6
Correct Answer: C
Solution :
\[[0.9-\{2.3-3.2-(7.1-8.9)\}]\] \[=[0.9-\{23-3.2+1.8\}]\] \[=[0.9-0.9]=0\]
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