| 13 | 54 | ? |
| 7 | 45 | 32 |
| 27 | 144 | 68 |
A) 42
B) 36
C) 6
D) 4
Correct Answer: D
Solution :
In each column, the third number \[=13+2\times 7=27\] \[54+2\times 45=144\] \[\therefore \] missing number \[\Rightarrow \] \[x+2\times 32\] or \[x=4\]
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