What is the probability that student will fail in all 3 attempts?
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no. of attempts- 3
options- 2 (pass or fail)
in first attempt = 1/2
similarly in 2nd & 3rd attempt= 1/2, 1/2
% = 50%
50+50+50/100+100+100= 150/300=1/2
therefore probability= 1/2
options- 2 (pass or fail)
in first attempt = 1/2
similarly in 2nd & 3rd attempt= 1/2, 1/2
% = 50%
50+50+50/100+100+100= 150/300=1/2
therefore probability= 1/2
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