Number Series-Test 1 (Finding the missing term)

11)

What will come in place of question mark (?) in the following number series?

7, 20, 46, 98, 202, ?

[Bank of Baroda, 2011]
Discussion
12)

1, 7, 49, 343, (?)

[Bank of Baroda, 2011]
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13)

13, 20, 39, 78, 145, (?)

[Bank of Baroda, 2011]
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14)

12, 35, 81, 173, 357, (?)

[Bank of Baroda, 2011]
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15)

3, 100, 297, 594, 991, (?)

[Bank of Baroda, 2011]
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