Question
A certain sum of money becomes 4000 in 6 years and Rs.
5000 in 10 years at any certain rate of simple interest. Find the principal amount.Solution
Simple interest for 4 years = 5000 – 4000 = Rs. 1000 Simple interest for 1 year = 1000/4 = Rs. 250 Simple interest for 6 years = 250 × 6 = Rs. 1500 So, required principal amount = 4000 – 1500 = Rs. 2500
Which of the following is used to eliminate redundancy and anomalies in a database?
Which command is used to remove all records from a table without deleting the table structure?
The result of a Cartesian product of two relations R and S will have:
Which OOP principle allows a single interface to represent different underlying forms or data types?
Which of the following is true about a view in SQL?
A primary key in a table:
Which SQL keyword is used to sort the result set?
The concept of "data hiding" is primarily achieved through which OOP principle?
Which of the following is a valid constraint in SQL?
Which of the following statements about abstract classes is true?
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