Complete the series: 1 , 3 , 10 , 21 , 64 , 129 , ............ , 777
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Answered by
39
1*2+1=3
3*3+1= 10
10*2+1=21
21*3+1 = 64
64*2+1 = 129
129*3+1 = 388
388*2+1 = 777
The answer therefore is 388
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Answered by
5
Answer:
The answer is 388.
after 129and777
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