Answer
16 sectors
Work Step by Step
There are 10 lines of 100 integers each in one page, so one page contains $10\times100 = 1000$ integers. In two page there will be 2000 integers.
Each integer requires 4 bytes so 2000 integers will require $4\times2000 = 8000$ bytes.
One sector has 512 bytes. So the number of sectors required will be -
$8000\div512 = 15.626$
Hence at least 16 sectors will be required.