MCQOPTIONS
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				| 1. | 
                                    In the following question, select the missing number from the given series._x005F_x000D_ Â _x005F_x000D_ 15, 22, 31, 42, 55, ?_x005F_x000D_ | 
                            
| A. | 60_x005F_x000D_ | 
| B. | 68_x005F_x000D_ | 
| C. | 70_x005F_x000D_ | 
| D. | 74 | 
| Answer» D. 74 | |