Find the probability of getting two heads and one tail on a toss of three fair coins

Question

cwrw238 · Answer

possible outcomes are HHT, HTH, THH
probability of H  or tail n one toss is 1/2
probability of each of the above 3 outcomes = 1/2 * 1/2 * 1/2
probability of one of the possible out are now added

cwrw238 · Answer

last line should read 

probability of one of the possible outcomes are now added

cwrw238 · Answer

do you follow that?

cwrw238 · Answer

when events are independent the probabilities are multiplied:
eg 
i throw H AND T AND H
probability of this is 1/2 * 1/2 * 1/2
AND = multiply

where events are mutually exclusive probabilities are ADDED

HTH OR THH

= 1/8 + 1/8

OR = ADD

cwrw238 · Answer

you still there?

anonymous · Answer

Sorry, yes I understood. Thank you for your help :)

cwrw238 · Answer

yw