| Directions for Questions -: Find the missing number in each of the following magic square figure. |
| 5 | 11 | 21 |
| 7 | 15 | 29 |
| 13 | 27 | ? |
A) 54
B) 55
C) 52
D) 53
Correct Answer: D
Solution :
In each row, the rule \[\times \text{ }2\text{ }\pm 1.\] \[\therefore \] Missing number is \[27\times 2-1\text{ }=\text{ }54\text{ }-1=\text{ }53\]
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