please let me know the probability that in five tossess, a coin shows heads at least 3 times in succession?
could be
HHHTT
THHHT
TTHHH
HHHHT
THHHH
HHHHH
Each of those is (1/2)^5 = 1/32
so the prob(your event) = 6(1/32) = 3/16
HHHTT
THHHT
TTHHH
HHHHT
THHHH
HHHHH
Each of those is (1/2)^5 = 1/32
so the prob(your event) = 6(1/32) = 3/16