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Instructions
In the following questions, a series is given, with one term missing. Choose the correct alternative from the given ones.
Solution
Let the unknown term be $$x$$.
Difference between the terms is
43-17 = 26
81-43 = 38
131-81 = 50
The difference between the difference of terms is
38-26 = 12
50-38 = 12
Therefore $$x$$=131 + 50 + 12 = 193.
Hence Option B is the correct answer.
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