Question
The average score of five students is 24. When the
scores of two additional students are included, the average drops by 2. What is the combined total of the marks for these two new students?Solution
Total marks of five students = 24 X 5 = 120 Total marks of seven students = (22 X 7) = 154 Required sum = (154 - 120) = 34 Hence, option b.
Which of the following concurrency control techniques allows multiple transactions to read data simultaneously but ensures that only one transaction ca...
Which normal form deals with the issue of transitive dependencies?
Which of the following statements about ACID properties in a DBMS is incorrect?
How many types of architecture we have in DBMS
In the context of databases, what does the term sharding refer to?
Which of the following joins returns all rows from both tables, filling in NULL values for non-matching rows?
Which of the following is true about Information?
What is the purpose of the SQL "GROUP BY" clause?
 In database management, which SQL command is used to remove a table and all its data from a database?
Which of the following storage devices is considered non-volatile?