How many three-digit integers exist such that all their digits are
odd?
Pick:
A) 80
B) 100
C) 120
D) 125
E) 135
so last digit can be filled in 5 ways- 1,3,5,7,9   there are 5 possibilities. The answer is 5∗5∗5=125   The correct answer is 125
<result>D</result>
How many three-digit integers exist such that all their digits are
odd?