Discrete Structure Solved MCQs

1. 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.

2. 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?

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

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

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

6. The graph representing universal relation is called?

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

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

9. Ceil function maps the real number to the

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

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

12. Floor function maps the real number to the

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

14. Universal logic gate is?

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

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

17. 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?

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

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

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