The transitive closure of the relation $$\left\{ {\left( {1,2} \right)\left( {2,3} \right)\left( {3,4} \right)\left( {5

How many sub strings can be formed from a character string of length $$n$$?

Which of the following graphs is / are planar? (see fig.)

Match the pairs in the following question. List - $${\rm I}$$ $$(A)$$$$\,\,\,\,$$ Virtual Memory $$(B)$$$$\,\,\,\,$$ Sha

Disk requests come to disk driver for cylinders $$10,22,20,2,40,56$$ and $$38,$$ in that order at a time when the disk d

In which of the following cases it is possible to obtain different results for call-by-reference and call-by-name parame

An unrestricted use of the "goto" statement is harmful because of which of the following reason(s):

How many substrings (of all lengths inclusive ) can be formed from a character string of length $$n$$? Assume all charac

Is the class of regular sets closed under infinite union? Explain.

Context free languages and regular languages are both closed under the operation(s) of :

Which of the following problems are un-decidable?