8 | 4 | 9 | 42 |
12 | 6 | 9 | 54 |
15 | 4 | ? | 62 |
A) 12
B) 10
C) 9
D) 8
Correct Answer: A
Solution :
\[8+4+9=21\times 2=42\] \[12+6+9=27\times 2=54\] \[15+4+\underline{\mathbf{12}}=31\times 2=62\]You need to login to perform this action.
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