Number Series-Test 2 (Finding the next term)

11)

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

12, 12, 18, 36, 90, 270, ?

[Punjab national Bank, 2011]
Discussion
12)

325, 314, 288, 247, 191, ?

[Corporation Bank, 2010]
Discussion
13)

45, 46, 70, 141, ?, 1061.5

[Corporation Bank, 2010]
Discussion
14)

620, 632, 608, 644, 596, ?

[Corporation Bank, 2010]
Discussion
15)

15, 25, 40, 65, ?, 165

 

[Corporation Bank, 2010]

 
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