You roll two dice. What is the probability the sum is 7?

You roll two dice. What is the probability the sum is 7?

Approach: Count favorable outcomes over total outcomes.

1/6. Favorable: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1). Total: 36. 6/36 = 1/6.

Follow-up: What is the probability the sum is 11?

Key concepts: sample space.