only one with two cars left
20 x 19 x 18/3 x 2 = 1,140 groups
15C3 = 455
Three
This depends on whether you do mean sets or if you mean groups as the two are different and often people use the word set when they mean group. 24 groups can be formed and you can calculate this by using the permutation function. 4 possible elements to select from to go into 3 slots, 4P3=24 groups. (Note I said 4 elements not 5, as by definition an element can not be repeated in a set so the set is not {1,2,3,4,4} but {1,2,3,4} unless you mean {1,2,3,44} but this doesn't change anything.)However, while 24 groups can be formed this is not true for sets, groups are structured unlike sets so a group of (1,2,3)≠(2,3,1), but a set{1,2,3}={2,3,1} i.e. the order of the elements matters in a group but not in a set, so only 6 sets of 3 elements can be made compared to 24 groups.
18
20 x 19 x 18/3 x 2 = 1,140 groups
Infinitely many.
yes they eat 3 people a day so eat them
23 x 22 x 21 x 20/4 x 3 x 2 = 8,855 groups
There are many different ways in which pollution is created. Running cars or dumping trash are forms of harmful pollution.
There are 6 different police cars.
Ther are a lot of different types of cars in the world...to many to list!
there are 720 cars from 80 different manufacturers
there are about 5,000 to 10,000 different cars out there.
There are 247 groups comprising 2 or more students.
There are 6 groups.
The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.The Roman empire was diverse because it encompassed many different ethnic groups of people and many different cultures and gods.