Question 12
A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 6, 21, 66, ?
Solution
The pattern followed is :
1 $$\times3+3$$ = 6
6 $$\times3+3$$ = 21
21 $$\times3+3$$ = 66
66 $$\times3+3$$ = 201
=> Ans - (B)
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