On Saturday morning, Malachi will begin a camping vacation and I will return home at the end of the first day on Which it rains. If on the first three days of the vacation the probability of rain on each day is 0.2, what is the probability that Malachi will return home at the end of the day on the following Monday?
A. 0.008
B. 0.128
C. 0.488
D. 0.512
E. 0.640
B
B
B
Guys hw is it B?? cant really comprehend it
The probability that it would rain on Saturday is 0.2
Hence, probability that it won’t rain on Sat is 1-0.8 = 0.8
Similarly, probability that it wont rain on Sunday is 0.8
Probability that it would rain on Monday is
Prob of No rain on Sat * No Rain on Sun * Rain on Monday
= 0.8 * 0.8 * 0.2 = 0.128
B
oooh hell..thanks DevilzA..m amazed y I could solve it in the first place..it is i guess the simplest quest of prob!
nice 1
option B
B
Question says following monday …. if i am not wrong it should be the 10th day because following refers to the monday which follows the coming monday. I am getting a feeling the answer is C or D.
Any suggestions (TakeGmat Team please advice)
B
B…
B
i suppose………..