The operation star is defined as a star b = a^2/b. For how many integer values of x will the value of 10 star x be a positive integer?
a * b = a^2/b
a = 10
So
a^2 = 100
So...we are looking for all the divisors of 100.....these are
1 2 4 5 10 20 25 50 100
So...x will take on 9 values
