Given: P(H)=2P(T)
We know that, P(H)+P(T)=1
⇒2P(T)+P(T)=1
⇒P(T)=31andP(H)=32
⇒P(2tails and1head)=31×31×32×2!3!(for arrangements)
⇒P(2tails and1head)=92
A coin is biased so that a head is twice as likely to occur as a tail. If the coin is tossed 3 times, then the probability of getting two tails and one head is-
Held on 31 Jan 2024 · Verified 6 Jul 2026.
92
91
272
271
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