Question

in a bus there are 9person can sit. how many person can sit in 9 such buses

Answer 1

I think 81 people can sit. Bcoz 9 people in one bus and 9 such bus, so 9×9=81

Answer 2

number of persons can sit in a bus = 9
number of persons can sit in 9 buses = 9*9
                                                                  = 81 persons 

therefore 81 persons can sit in 9 buses.