Made easy test series Q

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Page service time(PST)=0.7(20) + 0.3(8)==> 14+2.4 ===>16.4 ms==> 16.4 * $10^6 *  10^{-6}$ ms==> 16.4* $10^6$ ns

EMAT=(1-p)(PST) + (p)MAT==>(1-p)(16400000)+p(100)

==> 16400000 - 16400000p +100p=200

==> -16399900p=-16399800

==>p=16399800/16399900

==>p=0.9999939024018439

==>p=99.99%