I do have a wide experience in working with computers because I have worked with computers and automated systems for almost many years.It is indeed fun and easy to work on computerised systems as it saves time and money.It is easy to work on.

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A does 1/10 of the job every day
B does 1/8 of the job every day
A worked for 6 days, so completion is 6 * 1 /10 = 6/10
B has to do the remaining 4/10

So
x * 1/8 = 4/10
x * 5/40 = 16/40
x = 16/5
=> 3,2 days

Any time you have an array with more than one dimension, complex parsing syntax is required. print "Contents: {$arr[1][2]}" would've worked.

Propagation of network congestion information upstream through an internetwork.

Yes I have certainly worked on ADO.Net. ADO.net encompasses two groups of classes: content components and managed provider components. The content components include DataSet class and other supporting classes as DataTable, DataRow, DataColumn and DataRelation. The DataSet class is a lightweight cache of a particular database from the data store.  It allows reading and writing of data and schema in XML. ADO.Net involves disconnected datasets because it is geared towards a distributed architecture. All tables and relations in a DataSet are exposed through the DataSet tables and Relations properties.  E.g. Using System; Using System.Data;  DataSet ds = new DataSet("MyDS"); Ds.Tables.Add ("Order"); Ds.Tables["Order"].Columns.Add("OrderNo" Type.GetType("System.Int32"));  The DataSet tightly integrates with XML using the methods WriteXml, ReadXml, WriteXmlSchema and ReadXmlSchema