Math Problem Solver

ajay wants to host a partu on his 50th birthday in a large banquet hall having a certain number of chairs . he wants that guests should sit in different groups like in pairs triplets quadruplets fives and sixes etc. when the banquet hall manager arranges chairs in such pattern like in 2^s,3^s,4^s,5^s and 6^s then 1,2,3,4 and 5 chairs are left repectively. but when he arranges in groups of 11^s no chair are left