Answer:
A
Step-by-step explanation:
Well, the first one is 2/40=1/20. The 2nd one is 1/39. You multiply these to get 1/780.
Answer:
2/5.
Step-by-step explanation:
The prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17 and 19.
A total of 8.
So the probability of rolling a prime number is 8/20
= 2/5.
Answer:
1,880.82
Step-by-step explanation: