CO6( Discrete Mathematics)

A statement with all true values is called

• Inconsistent

• Consistent

• Tautology

• Negation

The value of p,p-->q,q--->r is

• P

• q

• r

• True

A total of 1232 students have taken a course in Spanish, 879 have taken a course in French and 114 have taken a course in Russian. Further, 103 have taken a course in Spanish and Russian, 23 have taken a course in Spanish and French and 14 have taken a course in French and Russian. If 2092 students have taken at least one of Spanish, French and Russian, how many students have taken a course in all 3 languages?

• 8

• 107

• 108

• 7

If n^3-n is divisible by 3 or not

• True

• False

How many edges are there for each vertices in a complete graph G with n vertices

• n

• n+1

• n-1

• None of the above

Can a simple graph exist with 15 vertices each of degree 5?

• Exist

• Does not exist

Which is the idempotent elements in the set {1,-1,i,-i}?

• 1

• -1

• i

• -i

How many conditions are there to prove for the given set us a field?

• 5

• 8

• 9

• 11

Is the Boolean algebra contains 9 elements?

• Yes

• No

The greatest lower bound of {10,30} in D30

• 1

• 10

• 2

• 3