Directions (1·5): What should come in place of the question mark (?) in the following number series?

1. 586        587         586       581        570         ?       522

545

543

551

557

None of these


2.  64           54           69           49           74           44           ?

89

69

59

99

None of these


3. 4000    2008     1012      ?       265      140.5     78.25

506

514

520

512

None of these


4.  5        5         15        75        ?         4725      51975

520

450

525

300

None of these


5. 52    26    26    39    78.    ?    585

195

156

234

117

None of these


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