Questions on 'pdf file' tag
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562
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881
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564
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486
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1
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472
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457
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1
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577
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0
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1
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483
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1
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408
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0
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1
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461
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1
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386
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1
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508
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0
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1
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411
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0
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1
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385
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1
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1
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498
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0
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1
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507
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0
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1
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407
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1
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1
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431
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0
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1
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478
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1
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1
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583
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0
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1
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480
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0
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1
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456
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0
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1
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516
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0
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1
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479
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1
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471
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0
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1
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404
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1
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420
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0
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1
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507
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1
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591
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1
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584
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1
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573
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1
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538
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1
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624
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1
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619
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0
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1
answer
561
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