In the sequence 1, 2, 4, 8, 16, 32, …, each term after the first is twice the previous term. What is the sum of the 16th, 17th, and 18th terms in the sequence?
218
3(217)
7(216)
3(216)
7(215)
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本题答案有问题吧,应该选C
本题答案有问题吧,应该选C
答案肯定错了
答案没错~第16项是2的15次方,并不是16次方哦
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