How do others’ prayers affect my exam performance?

From: Shailee

After i got to know my 10th class results, i called a devotee Mataji and told her my marks and then thanked her that because of her prayers i got good marks. Of course i know that my efforts are also a part of the result. My uncle who was listening jumped in with “How is this possible? You results came only because of your efforts. Can you logically explain how others Prayers can change a result?”