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Byju's Answer
Standard XIII
Mathematics
Progression
Which number ...
Question
Which number would replace the blank in the following sequence
12, 25, 51, 103,
, 415
A
207
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B
205
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C
209
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D
208
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Solution
The correct option is
A
207
Each next term of the sequence is formed by multiplying the previous term by 2 and adding 1.
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