**4. Mary Claire has a crate of 256 oranges. She sold 25% of them to Faris. Then she sold 25% of those remaining to Joey. She sold 25% of those remaining after that to Chloe. Then she sold 25% of those remaining after that to Gena. Since 25% + 25% + 25% +25% = 100%, does this mean that Mia sold all her oranges. Explain your answer. If she did not sell all her oranges how many oranges does she have left?**