Probability • Sample space
Two bags, three probabilities
Choose one digit from each bag. Bag 1 gives the tens digit; Bag 2 gives the ones digit. Every pair is equally likely.
135
2468
3 × 4 = 12equally likely two-digit outcomes
Explore first
The complete sample space
Rows show the tens digit; columns show the ones digit. Select an event to highlight its favourable outcomes.
| Tens ↓ / Ones → | 2 | 4 | 6 | 8 |
|---|
favourable outcome 4 of 12
For divisibility by 3, add the digits. A number is divisible by 3 when its digit sum is a multiple of 3.
Your turn
Find each probability
Enter a fraction. Use the total number of equally likely outcomes as the denominator, then give your answer in simplest form.