Discrete Structure Solved MCQs

1. If x is a set and the set contains the real number between 1 and 2, then the set is?

2. How many injections are defined from set X to set Y if set X has 4 elements and set Y has 5 elements?

3. Which of the following function is not a mathematical function?

4. How many bits string of length “Four” are possible such that they contain two 1’s and two 0’s?

5. The number of reflexive closure of the relation {(0,1), (1,1), (1,3), (2,1), (2,2), (3,0)} on the set {0, 1, 2, 3} is?

6. Floor function maps the real number to the

7. Ceil function maps the real number to the

8. How many bytes are required for encoding 2000 bits of data?

9. Let the players who play cricket be “twelve”, the ones who play football are “Ten”, and those who play only cricket are “Six” then the number of players who play only football are? assuming there are a total of 16 players.

10. If n(A) = 20 and n(B) = 30 and n(A U B) = 40 then n(A ∩ B) is?

11. How many elements in the Power set of set A= {{Φ}, {Φ, {Φ}}}?

12. Which option is the negation of the bits “1001011”?

13. Let P and Q be statements then P<->Q is logically equivalent to?

14. If x is a set and the set contains an integer which is neither positive nor negative then the set x is?

15. Universal logic gate is?

16. The function (gof) is _________ , if the function f and g are onto function?

17. The cardinality of the Power set of the set {2, 4, 6} is?.

18. How many types of Canonical forms for a Boolean expression?

19. If a bit string contains {0, 1} only, having length “Five” has no more than Two 1’s in it so how many such bit strings are possible?

20. The graph representing universal relation is called?