Rolling a number less than 4 means that rolling a 1, 2, or 3 will satisfy the requirement. Since 3 of 6 possible outcomes will satisfy the requirement then the likelihood that it will be rolled is 3/6 times. 3/6 reduces to 1/2 or 50% chance.
A)13cm that the is the answer
Answer:
there are 19 unfavorable spots in 21 for Daeshon,
thus Pr = 19/21 [ B ] <----