それは、卵が枕の上に落とされたかどうかに依存します。これは、それらが落とされた高さと、枕の繊細さや他の多くの要因に依存します。枕の上に2本の卵が落とされていないと仮定すると、目的の目的に役立ちます。

12個の卵 - 壊れていないが落とされた卵=まだ12個の卵
12個の卵-5個の食べられた卵= 7個の卵
7つの卵 +窓から投げられた1つの卵= 8つの卵

しかし、卵が窓を壊す可能性は非常に低く、卵が無傷のままでいる間、卵が窓を壊す可能性はさらに低いことは注目に値します。壊れた窓はまた、修復するのに多くの卵の価値を費用するので、将来的にはより少ない卵を買うことができるでしょう。
It depends on whether the eggs dropped on the pillow broke, which depends on the height they were dropped from and the fimness of the pillow as well as many other factors. Assuming that the two eggs dropped on the pillow did not break and are still useful for your intended purposes:

Twelve eggs - two unbroken but dropped eggs = still twelve eggs
Twelve eggs - five eaten eggs = seven eggs
Seven eggs + 1 egg thrown through the window = 8 eggs

However, it is worth noting that it is extremely unlikely for an egg to break a window, and even less likely for an egg to break a window while the egg remains unharmed. A broken window would also cost the value of many eggs to repair, so you will likely be able to buy less eggs in the future.