ISRO 2023 Quiz 25

Let R = (A, B, C, D, E, F) Be a relation scheme with the following dependencies:

C → F, E → a, EC → D, A → B.

Which of the following is a key for R?

If a * b = a such that a ∗ (b ∗ c) = a ∗ b = a and (a * c) * c = a * b = a then________

………. is putting an element in the appropriate place in a sorted list yields a larger sorted order list.

How will you free the allocated memory?

In a class of 100 students 70 are boys and rest are girls. mean of boy’s marks is 75 and that of complete class is 72, What is the average of girl’s marks?