1.

In which groups does the number 55 belongs?

A.  5, 10, 15, 25,......         
B.  6, 12, 18, 24,......
C. 4, 8, 12, 16,.....                                    
D. 10, 20, 30, 40,.....
Answer» B.  6, 12, 18, 24,......


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