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Find out the number of page fault in the following strings of pages used by CPU using the page replaced algorithm LRU and LIFO[taking 3 page frames]

1,1,3,5,3,4,2,2,2,1,8
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The LIFO algorithm omits the page which has entered the system in the latest arrival.

The MRU algorithm omits the page which has been used the most till this demand.

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Let L1=0*1* ,L2=1*0* ,L3=(0+1)* and L4=0*1*0*. Then Find The Number Of Strings In The Following Language L.L= (L1 ∩ L2) - (L3 ∩ L4)