Mathematics for IGCSE & O level - Sequences (Section 4 - No. 50)
What is the formula for the nth term of the sequence: 1/2, 1/4, 1/8, 1/16, ...?
1/n
1/2n
1/2^(n-1)
1/2^n
Explanation
The sequence is made by dividing 1 by powers of 2, or 1/2^(n-1)
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