Bob bought 81 cats that cost the same. the total cost of all the cats were 433.35. what was the price of each cat

How can you decide witch operations to use to slice a two step equation

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.