Abag contains three red marbles, three green ones, one lavender one, one how many sets of five marbles include at least two red ones?

There are 18 sets of five marbles including at least two red ones.

Step-by-step explanation:

Since we have given that

Number of red marbles = 3

Number of green marbles = 3

Number of lavender marbles = 1

total number of marbles = 3+3+1+1 = 8

We need to find the sets of five marbles including at least two red ones.

so, it becomes,

hence, there are 18 sets of five marbles including at least two red ones.