When Polly was seven years old she hammered a nail into the tree in her backyard to mark her height. 3 years later at age 10, Polly returned to see how much higher the nail was. If the tree grew by seven inches each year, how much higher would the nail be?
It is known that only 2 % students solved this in one of the most
difficult exams the IAS (Indian Administrative Service) Exam
5+3+2 = 151022
9+2+4 = 183652
8+6+3 = 482466
5+4+5 = 202541
7+2+5 = ?