Answer: All I know is that the answer to 50 + 25 +12.5, which is 87.5. If it didn't help you or at least a little, I don't know what else to say.
Answer:
The sequence is geometric with first term
The ratio of successive term and proceeding term is constant (r=0.5) . Therefore the sequence is geometric whose first term is a 1 = 100 and common ratio is r= 0.5 [Ans]
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