6. x²+3x+2 = 0 is an best example for
1) Proof
2) Axiom
3) Open sentence
4) Quantifier

7. The method of establishing the truth of a proportion is a
1) Quantifier
2) Undefined term
3) Definition
4) Proof

8. Find which is not a proportion
a) Is to the sum of 6 and 4?
b) Ravi is a best teacher
c) The sum of 6 and 5 is 10
d) The product of 3 and 5 is 15
1) a,c
2) b,d
3) b,c
4) a,b

9. Which is not a building block of Mathematics
1) Formula
2) Undefined term
3) Axioms
4) open sentence

10. Establishing the truth of a proportion by using the rules of Logic and call them as
1) Proofs
2) Axioms
3) Theorm’s
4) Open sentence