Certain or impossible

1. 1.
   A bag has 5 red marbles. You pick one without looking. Picking a red marble is…
   a)Certainb)Impossible
2. 2.
   A bag has 4 red marbles. You pick one without looking. Picking a blue marble is…
   a)Certainb)Impossible
3. 3.
   A bag has 1 blue marble. You pick one without looking. Picking a blue marble is…
   a)Certainb)Impossible
4. 4.
   A bag has 4 red marbles. You pick one without looking. Picking a red marble is…
   a)Certainb)Impossible
5. 5.
   A bag has 7 red marbles. You pick one without looking. Picking a blue marble is…
   a)Certainb)Impossible
6. 6.
   A bag has 5 blue marbles. You pick one without looking. Picking a blue marble is…
   a)Certainb)Impossible
7. 7.
   A bag has 4 blue marbles. You pick one without looking. Picking a blue marble is…
   a)Certainb)Impossible
8. 8.
   A bag has 7 blue marbles. You pick one without looking. Picking a blue marble is…
   a)Certainb)Impossible
9. 9.
   A bag has 8 red marbles. You pick one without looking. Picking a red marble is…
   a)Certainb)Impossible
10. 10.
    A bag has 8 blue marbles. You pick one without looking. Picking a blue marble is…
    a)Certainb)Impossible
11. 11.
    A bag has 3 blue marbles. You pick one without looking. Picking a blue marble is…
    a)Certainb)Impossible
12. 12.
    A bag has 7 red marbles. You pick one without looking. Picking a red marble is…
    a)Certainb)Impossible
13. 13.
    A bag has 3 red marbles. You pick one without looking. Picking a red marble is…
    a)Certainb)Impossible
14. 14.
    A bag has 1 red marble. You pick one without looking. Picking a red marble is…
    a)Certainb)Impossible
15. 15.
    A bag has 2 blue marbles. You pick one without looking. Picking a blue marble is…
    a)Certainb)Impossible
16. 16.
    A bag has 3 red marbles. You pick one without looking. Picking a blue marble is…
    a)Certainb)Impossible
17. 17.
    A bag has 6 blue marbles. You pick one without looking. Picking a red marble is…
    a)Certainb)Impossible
18. 18.
    A bag has 6 red marbles. You pick one without looking. Picking a red marble is…
    a)Certainb)Impossible
19. 19.
    A bag has 6 blue marbles. You pick one without looking. Picking a blue marble is…
    a)Certainb)Impossible
20. 20.
    A bag has 2 red marbles. You pick one without looking. Picking a red marble is…
    a)Certainb)Impossible

Free maths worksheets and practice: rocketdigits.com/learn/certain-or-impossible