Answer:
It would be unusual to get 4 or more questions correct by guessing alone.
Step-by-step explanation:
You have a 1 in 3 probability(there are three choices) of guessing the correct answer for a single question. You have 12 opportunities to guess.
So, the probability will be =
= 4
Therefore, it would be unusual to get 4 or more questions correct by guessing alone.
Answer:
20
Step-by-step explanation:
11 + 5 = 16
16 + 3 = 19
19 + 1 = 20
<3
Answer:
1/6
Step-by-step explanation:
landing on heads is a 1/2% and landing on a 3 or 4 is a 1/3 then multiply together