A causes B or C, but not both, F occurs only if B occurs

A causes B or C, but not both
F occurs only if B occurs
D occurs if B or C occurs
E occurs only if C occurs
J occurs only if E or F occurs
D causes G, H or both
H occurs if E occurs
G occurs if F occurs

If A occurs which of the following must occurs?
I. F and G
II. E and H

(a) I only
(b) II only
(c) III only
(d) I,II, & III
(e) I & II (or) II & III but not both

Show me d way how to solve this........................😕😕


  • Sagar07
    III only....
  • Banashree Patra
    Banashree Patra
    But the answer given is option (e).Though i am not sure..
  • Sagar07
    this is impossible.... in that case, ther might be the mistake in option (e)... it should be I & III or II & III, but not both.....
  • Banashree Patra
    Banashree Patra
    Can u plz show me the steps to this i.e the prev question and also d other parts m sndng.. Other parts of this question..ans r also given....

    12. If B occurs which must occur
    (a) D
    (b) D and G
    (c) G and H
    (d) F and G
    (e) J
    Ans. (a)

    13. If J occurs which must have occurred
    (a) E
    (b) either B or C
    (c) both E & F
    (d) B
    (e) both B & C
    Ans. (b)

    14. Which may occurs as a result of cause not mentioned
    I. D
    II. A
    III. F

    (a) I only
    (b) II only
    (c) I & II
    (d) II & III
    (e) I,II & III
    Ans. (c)

    15. E occurs which one cannot occurs
    (a) A
    (b) F
    (c) D
    (d) C

    Ans: (b)
  • Sagar07
    see, if A occurs, B or C occurs and if B or C occurs then, D occurs, so option III is right.... Also when A occurs, D must occur... Suppose if A causes B, then B causes F and D causes G, so option I.... Next if A causes C, then C causes E and D causes H, option II.... As A can cause only B or C so, option I or option II only, but not both...
  • Sagar07
    Similarly, if B occurs, D, F and G must occur... M not satisfied wid d options given for que 12.....
    J occurs only if E or F occurs.....E occurs if C occurs and F occurs if B occurs.. so, option b..
    Cause is not mentioned for A.. so, A may occur as a result of cause not mentioned but as A must cause D from prev xplanation, so ans is both A and D..
    E occurs when C occurs... that means B cannot occur, as F occurs only if B occur, so ans is F...............
  • TinaT
    Draw a flow chart and all will become clear.
  • mukeshbhoria
    I m not understand. tou pelp really confusinggg...
  • anushka.pampi
    good nd clear explanation.....!!!!!!!
  • kunchem thulasi
    kunchem thulasi
    plz give me detail explanation ....
  • Pradip Banik
    Pradip Banik

    Help me in this part.what is the topic name

  • Pradip Banik
    Pradip Banik

    A occurs means what

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