The series mentioned above is in the form of G.P. (geometric progression)So the next term is 1/8when we divide second term and first term we get a difference of 1/2 which is common throughout the series.
1/8 should be the answers.Process:1/2 in 2 = 11/2 in 1 = 1/21/2 in 1/2 = 1/41/2 in 1/4 = 1/8
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