Number Series-Test 5 (Finding the wrong number)

6)

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

155, 151, 139, 119, 90, 55

[IBPS CWE (PO/MT), 2014]
Discussion
7)

1, 4, 12, 30, 68, 148, 304

[IBPS CWE (PO/MT), 2014]
Discussion
8)

45, 15, 6, 3, 2, 1, 4

[IBPS CWE (PO/MT), 2014]
Discussion
9)

445, 444, 436, 409, 343, 220

[IBPS CWE (PO/MT), 2014]
Discussion
10)

80, 76.5, 69.5, 59, 48, 27.5

[IBPS CWE (PO/MT), 2014]
Discussion

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