Questions

Sum of all numbers in each row and columns must be 15.

In last row to gt sum as 15 missing number must replaced by 1. 

They are the sites at which microtubules attach to chromosomes.

National Maritime Day of India is observed every year on 5th April. On this day in 1919, S S Loyalty, the first ship of the Scindia Steam Navigation Company, journeyed to the United Kingdom.

Hard copy is the output which is printed by the computer.

There are many isotopes of uranium and all of them have same atomic number i.e, sum of nmber of neutrons and protons.

A relational database is a digital database based on the relational model of data, a database structured to recognize relations between stored items of information. A software system used to maintain relational databases is a relational database management system.

Computer database in which all data is stored in Relations which (to the user) are tables with rows and columns. Each table is composed of records (called Tuples) and each record is identified by a field (attribute) containing a unique value. Every table shares at least one field with another table in 'one to one,' 'one to many,' or 'many to many' relationships. These relationships allow the database user to access the data in almost an unlimited number of ways, and to combine the tables as building blocks to create complex and very large databases.