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Which of the following statement is fals...

Which of the following statement is false ?

A

`x^(2) - 9 = (x + 3)(x-3), x in R`

B

`x^(2) + 1 = 0 rArr x in R`

C

`x + 3 = 5 rArr x in {2}`

D

`x^(2) +1 = 0 rArr x cancel in R`

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-MATHEMATICAL REASONING [APPENDIX - 4]-Exercise
  1. A = {1,2,3,4,5}. Which of the following is true ?

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  2. Biconditional statements are given below.true statement among them is

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  3. Which of the following statement is false ?

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  4. p rArr q is false is

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  5. If p is false, q is true then which of the following is false ?

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  6. If p : 10 gt 8, q : 10 gt 12, then p ^^ q

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  7. If p : 7 gt 4, q : 7 lt 9, then p vv q

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  8. If p : 3 + 5 = 8, q : 2 xx 3 = 8 then, p harr q

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  9. The converse of p rArr q is

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  10. The inverse of p rArr q is

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  11. The contrapositive of p rArr q is

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  12. The converse of "If two triangles are congruent then they are similar"...

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  13. The inverse of "if two triangles are congruent then they are similar" ...

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  14. The contrapositive of "if two triangles are congruent then they are si...

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  15. The converse of "if in a triangle ABC, AB = AC then angleB = angle C" ...

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  16. The inverse of "if in a triangle ABC, AB = AC then angleB = angleC" is

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  17. The contrapositive of "if in a triangle ABC, AB = AC then angleB = ang...

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  18. The converse of "if in a triangle ABC, AB gt AC then angleC gt angleB ...

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  19. The inverse of "if in a triangle ABC, AB gt AC then angleC gt angleB "...

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  20. The contrapositive of "if in a triangle ABC, AB gt AC then angle C gt ...

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