SOLUTION: A baby has five naira note,twenty naira note and fifty naira note in his pocket.What is the probability of picking a twenty naira note if he pocks randomly

Question 1165569: A baby has five naira note,twenty naira note and fifty naira note in his pocket.What is the probability of picking a twenty naira note if he pocks randomly
Found 2 solutions by solver91311, ikleyn:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Since this is a baby doing the picking, there is no guarantee that s/he will pick only one of the notes if they are all in the same pocket, so the possibilities are

5, 20, 50, 5 & 20, 20 & 50, 5 & 50, or 5 & 20 & 50.

Seven different ways, four of which have a 20 in them, so 4/7.

John

My calculator said it, I believe it, that settles it

I > Ø

Answer by ikleyn(52776) (Show Source): You can put this solution on YOUR website!
.

It depends on the number of notes the baby is piking from the pocket at a time.

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