Answer: 1/8
Explanation:
Multiply the probabilities in order to get the compound probability:
P(odd number)= 5/10 because 5 numbers out of ten are odd
P(heads)= 1/2 because there is an equal to chance to get heads or tails
P(odd number)= same as before, 5/10 (independent events)
5/10*1/2*5/10
1/2*1/2*1/2= 1/8