A) 30
B) 18
C) 9
D) 20
Correct Answer: C
Solution :
: We have, 54 + 43 = 2. Also, \[54+43=97\to 9-7=2=60+51=10.\] Also, \[60+51=111\to 11-1=10\] So, \[62+72=134\Rightarrow 13-4=9.\]You need to login to perform this action.
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