A) 3
B) 15
C) S4
D) 72
Correct Answer: C
Solution :
\[3\underset{3\times 3=9}{\mathop{9}}\,3\] \[4\underset{4\times 7=28}{\mathop{28}}\,7\] \[9\underset{9\times 6=54}{\mathop{54}}\,6\]You need to login to perform this action.
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