If `barE` and `barF` are the complementary events of E and F respectiv

1.	If `barE` and `barF` are the complementary events of E and F respectively and if `0 < P(F)
Answer» Correct Answer - A::B `(a) P(E//F) + P(bar(E)//F) = (P (E nn F))/(P(F)) + (P(bar(E) nn F))/(P(F))` ` = (P(E nn F) + P( bar(E) nn F))/(P(F))` ` = (P(F))/(P(F)) = 1` Therefore, option (a) is correct. `(b) P(E//F) + P(E//bar(F)) = (P(E nn F))/(P(F)) + (P(E nn bar(F)))/(P(bar(F)))` ` = (P(E nn F))/(P(F)) + (P(E nn bar(F))/(1-P(F)) ne 1` Therefore, option (b) is not correct. `(c) P(bar(E)//F) + P(E// bar(F)) = (P(bar(E) nn F))/(P(F)) + (P(E nn bar(F)))/(P(bar(F)))` `= (P (bar(E) nn F))/(P(F)) + (P(E nn bar(F)))/(1-P(F)) ne 1` Therefore, option (c) is not correct. `(d) P(E//bar(F)) + P(bar(E)//bar(F)) = (P(E nn bar(F)))/(P(bar(F))) + (P(bar(E) nn bar(F)))/(P(bar(F)))` ` = (P(bar(F)))/(P(bar(F))) = 1` Therefore, option (d) is correct.

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If `barE` and `barF` are the complementary events of E and F respectively and if `0 < P(F)

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