A) 5
B) 10
C) 15
D) 21
Correct Answer: D
Solution :
In fig. (A), \[93-(27+63)=3\] In fig, (B), \[79-\left( 38+37 \right)\text{ }=4\] \[\therefore \] In fig. (C), missing number \[=67-\left( 16+42 \right)=9.\]
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