Question
The "Selection" operation in relational algebra is
equivalent to which operation in SQL?Solution
WHERE
Average age of company A is 22 years and average age of both companies A and B is 14 years. If the ratio of number of employees in company A and B is 3:...
Average of 8 numbers is 70. If average of first four and last two numbers is 90 and 50, respectively then find the fifth number given that ratio of fift...
The average of 20 numbers is 75. The average of the first 12 numbers is 80, while the average of the last 11 numbers is 68. If the 12th number is remove...
Each question contains a statement followed by Quantity I and II. Read the information clearly and answer your questions accordingly.
Qu...
Find the average of prime numbers between 30 and 50 .
The average score of 50 students in an exam is 68. If the average of 30 boys is 72, what is the average score of the girls?
- The average age of (x + 3) people in a group is 20 years. When a new member aged 43 joins, the average becomes 21. Find x% of 500.
The average of two numbers ‘P’ and ‘Q’ is 480 such that they are in the ratio 5:7 respectively. Another number ‘R’ is 60 more than ‘Q’ a...
The average of 8 numbers is 12. If the 2 is added in 1st number, 4 is added in 2nd number, 8 is added in 3rd number and in the same way the number are a...
A set contains ten numbers. The average of the first six numbers is (x − 4), and the average of the last three numbers is (x + 2). The average of the...
Relevant for Exams:
