Question

Tommy has a piece of toast that has butter on one side, and he dropped it twice. Both times, it landed with the butter side up. If he drops it two more times, what is the probability that it will have landed butter side up a total of three times?

one over two
one over six
one over four
one over three

Answer 1

@ParthKohli

Answer 2

a

Answer 3

@ganeshie8

Answer 4

need help

Answer 5

This is a conditional probability question so:
P(lands butter side up three times | first two times heads)=P(lands butter side up three times and first two times heads)/P(first two times heads)

Answer 6

oops, i mean butter side up rather than heads :P