Number Series-Test 2 (Finding the next term)

16)

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

120, 320, ?, 2070, 5195, 13007.5

[Corporation Bank, 2010]
Discussion
17)

3, 732, 1244, 1587, 1803, 1928 ?

[Indian Bank, 2010]
Discussion
18)

16, 24, ?, 210, 945, 5197.5, 3378, 3.75

[Indian Bank, 2010]
Discussion
19)

45030, 9000, 1795, 355, 68, ?, 1.32

[Indian Bank, 2010]
Discussion
20)

5, 12, 36, 123, ?, 2555, 15342

[Indian Bank, 2010]
Discussion

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