A farmer in California owns a beautiful pear tree. He supplies the fruit to a nearby grocery store. The store owner has called the farmer to see how much fruit is available for him to purchase. The farmer knows that the main trunk has 24 branches. Each branch has exactly 12 boughs and each bough has exactly 6 twigs. Since each twig bears one piece of fruit, how many plums will the farmer be able to deliver?

“1728”

This guess is derived from multiplying the numbers of branches, boughs, and twigs (24 branches x 12 boughs x 6 twigs = 1728). However, the riddle states that the tree is a pear tree, which does not produce plums.

“0”

While it's true that a pear tree does not bear plums, the answer '0' implies that there are no fruits at all. The riddle emphasizes the type of fruit, not the absence of fruit.

“144”

This guess comes from calculating the total number of twigs (24 branches x 6 twigs = 144). However, the focus of the riddle is on the type of fruit produced, not just the quantity.