After other workers taken 1 banana, 2 oranges and 1 pear then total fruits left in the basket
Now the number of oranges left is 4.
So the probability of picking an orange from the basket is
After she took 1st orange then the number of oranges left 3
So the probability of picking an orange for the 2nd time is
Now the number of oranges left is 2, and the total number of fruits is 9. So the probability of picking third fruit also orange is