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Questions by Rounak Agarwal

4 votes
4 answers
0 votes
2 answers
A detective has interviewed four witnesses to a crime. From the stories of the witnesses the detective has concluded that if the butler is telling the truth then so is the cook; the cook and the gardener cannot both be telling the truth; the gardener and the ... . For each of the four persons can the detective determine whether that person is telling the truth or lying ? Explain your reasoning.
asked May 26, 2017 in Mathematical Logic 594 views
2 votes
2 answers
Consider a 4-way set associative cache that has 8-lines, with perfect LRU cache replacement and supports a block size of 16-bytes. For the following memory access pattern (shown as byte addresses), find the hit ratio? 3, 5, 6, 21, 32, 14, 5, 10, 11, 12
asked Feb 9, 2017 in CO and Architecture 312 views
2 votes
1 answer
Question: Six different airlines fly from New York to Denver and seven fly from Denver to San Francisco. How many different pairs of airlines can you choose on which to book a trip from New York to San Francisco via Denver, when you pick an airline for the flight to Denver and an airline for the continuation flight to San Francisco ? How many of these pairs involve more than one airline ?
asked Dec 19, 2016 in Combinatory 1.1k views
4 votes
1 answer
The decomposition of relation R with FD set F into R1 and R2 has lossless join property iff R1 $\cap$ R2 $\rightarrow$ R1 $\in$ F$^+$ OR R1 $\cap$ R2 $\rightarrow$ R2 $\in$ F$^+$ If R is decomposed into more than 2 relations, can we apply ... join property ? Or is that table drawing thing the only way to check for lossless join property ? Answers with reference(s) will be much appreciated. Thanks.
asked Sep 22, 2016 in Databases 721 views
5 votes
1 answer
Alphabet : {a, b} Language : Set of all strings which start and end with same symbol Doubt : Can $\epsilon$ be considered as part of the language ? Edit: I can see several people have answered my question in the comments. Perhaps I should have mentioned that I need an ... to be present at the beginning and end of "ab" or even between a and b. If you disagree with me please give some explanation.
asked Aug 13, 2016 in Theory of Computation 4.7k views