There are 6 boxes numbered 1, 2, …, 6. Each box is to be filled with either a…
2025
There are 6 boxes numbered 1, 2, …, 6. Each box is to be filled with either a red or a green ball such that at least one box contains a green ball and the boxes containing green balls are consecutively numbered.The total number of ways in which this can be done is:
- A.
5
- B.
21
- C.
33
- D.
6
Attempted by 7 students.
Show answer & explanation
Correct answer: B
