Question 1045151
Each day the total number of fruits goes down by one.
One day, there will just be two fruits to pick, and the gardener will pich the last pair of fruits as a single fruit will appear.
The next day, there will be just one fruit, and the gardener will pick just one fruit: the last fruit.
 
At the start there is an odd number of bananas: {{{25}}} bananas.
Any day that there is an odd number of bananas,
if the gardener picks only one banana,
he is picking two of different fruits,
and a new a banana appears,
so the next day the number of bananas is the same odd number.
Any day that there is an odd number of bananas,
if the gardener picks two bananas,
he is picking two of the same fruits,
and an orange appears,
so the next day, the number of bananas is {{{2}}} less, but still an odd number.
Every day there is an odd number of bananas.
The last  day, when there is only one fruit,
there is also an odd number of bananas: just {{{1}}} .
The last fruit picked up ias a {{{highlight(banana)}}} .