some people are standing square . from them 32 are removed and then form a small square and then 8 more removed . now we can not form the square . so how many people are there at the beginning ?
we should find the two square numbers whose difference is 32 . starting from 9,16 , 25,36 , 49,64 , 81,100 , . . . . we observe 81 - 49 = 32 & 49 - 8 = 41 which is not a square . answer : e
add(add(add(add(32, 8), 8), const_1), 32)