In each of the following questions, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
The pattern followed is that multiples of 3 are added.
1Â +Â 3Â =Â 4
4Â +Â 6Â =Â 10
10Â + 9Â =Â 19
19Â +Â 12Â =Â 31
31 + 15 =Â 46
=> Ans - (B)
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