Answer:
1/26
Step-by-step explanation:
This is a case of joint probability. We find the two probabilities separately and then multiply the results together:
P(odd number on cube) = 3/6 = 1/2; P(7 from a deck)) = 13/52 = 1/13
Then the desired joint probability is (1/2)(1/13) = 1/26
Note that the two events here are entirely separate and independent.