In a purse there are 20 rupee notes ten rupee notes and 50 rupee notes the number of 50 rupee notes exceeds 2 times the number o
f 10 rupee note by 1 the number of 20 rupee notes are 5 less than the number of 10 rupee notes if the total value of the money in a purse is 860 find the number of each variety of notes.
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Answer:
0
Step-by-step explanation:
given that we roll a fair die repeatedly until we see the number four appear and then we stop.
the number 4 can appear either in I throw, or II throw or .... indefinitely
So X = the no of throws can be from 1 to infinity
This is a discrete distribution countable.
Sample space= {1,2,.....}
b) Prob ( 4 never appears) = Prob (any other number appears in all throws)
=
where n is the number of throws
As n tends to infinity, this becomes 0 because 5/6 is less than 1.
Hence this probability is approximately 0
Or definitely 4 will appear atleast once.