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18, 22, 30, ? ,78, 142
A.  44
B.  35
C.  46
D.  48
E.  None of these
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2 Answers

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$ 18 + 4 = 22 $

$ 22 + 8 = 30 $

$ \mathbf{30 + 16 = 46} $

$ 46 + 32 = 78 $

$ 78 + 64 = 142 $
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