Algebra
If P(A) + P(B) = 1, does it follow that either event A or event B must occur?
If P(A) + P(B) = 1, does it follow that either event A or event B must occur?
2 Answers
Mir Noaman Ali IIT-Roorkee
NO IT IS NOT NECESSARY
Ritvik Gautam
No it does not mean that either or the event must occur.
for exaple... p(a) could be 0.. in that case too... P(a) + P(b) = 1
Please Approve!!
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algebra
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