Question

Mr. Robinson sets 36 glasses on

Answer 1

4 because you divide 36 by 9

Answer 2

Hey there!

We are given that

He puts 36 glasses on a table

And puts same number in 9 rows

So we need to know how many glasses are kept.
Leg number of glasses kept be A
=> 9 x A = 36
=> A = 36/9
=> A = 4
Hence he puts 4 glasses in each row

Hope this helps your dear :)