Discrete Maths - Sets

Avatto > > GATE COMPUTER SCIENCE > > Practice Questions > > Engineering Maths > > Discrete Maths > > Sets

16. If f : R ---->R defined by f(x) = x² + 1, then values of f ^-1 (17) and f ^-1(-3) are respectively

Answer
Comment
Array

Option : D
Explanation :

You must be logged in to post a comment.

You must be logged in to post a comment.

17. In a beauty contest, half the number of experts voted for Mr. A and two thirds voted for Mr. B. 10 voted for both and 6 did not vote for either. How many experts were there in all ?

Answer
Comment
Array

Option : C
Explanation :

You must be logged in to post a comment.

You must be logged in to post a comment.

18. Let n(A) denotes the number of elements in set A. If n(A) =p and n(B) = q, then how many ordered pairs (a, b) are there with a ∈ A and b ∈ B ?

Answer
Comment
Array

Option : B
Explanation :

You must be logged in to post a comment.

You must be logged in to post a comment.

19. The set of all Equivalence classes of a set A of cardinality C

Answer
Comment
Array

Option : B
Explanation :

You must be logged in to post a comment.

You must be logged in to post a comment.

20. Let Z denote the set of all integers.
Define f : Z —> Z by
f(x) = {x / 2 (x is even)
0 (x is odd)
then f is

Answer
Comment
Array

Option : A
Explanation :

You must be logged in to post a comment.

You must be logged in to post a comment.

Related Quiz.
Sets

Forgot your password?

I agree with the Terms.