RBI Grade B Officers 2011 dec Paper

(i) All colours are varnishes→Universal Affirmative (A-type).
(ii) Some colours are paints →Particular Affirmative (I-type).
(iii) No triangle is circle →Universal Negative (E-type).
(iv) Some triangles are not circles→Particular Negative (O-type).
All squares are triangles.
No triangle is circle.
A + E⇒E-type of Conclusion“No square is circle.” (P)
No triangle is circle.
All circles are rectangles.
E + A ⇒ O1-type of Conclusion
“Some rectangles are not
triangles.”(Q)
No square is circle.
All circles are rectangles.
E + A ⇒ O1- -type of Conclusion“Some rectangles are notsquares.” (R)
(1) Conclusion I is converseof Conclusion (P).