Recent questions without answers

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5161
R isiff $R ^{-1}$ isTotal?a function?a surjection?an injection?a bijection?Fill in the entries in the table.
2 votes
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5165
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5168
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5173
Are new IIT’s worth joining than old NIT’s if you want to go for phD after M.tech?
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5182
A directed acyclic graph has no connected components.TRUE OR FALSE???
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5183
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5185
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5188
From where practice SQL query questions of GATE level , apart from previous year questions.
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5189
For multiplication method in hashing the formula is h(k)=m* (KA mod 1);m=2^p, k=key , 0<A<1My question is how does it actually works.Please explain in a detailed way.
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5190
What is the SDT to eliminate redundant parenthesis from infix expressions with * and +? what is the concept behind removal of redundant parenthesis and how to start?