For each coin, there are <u>2 outcomes</u>, heads (H) or tails (T), so for the <u>3 coins</u>, the number of outcomes are:
2 x 2 x 2 = <u>8 outcomes:</u>
HHH / HHT / HTH / THH / TTT / TTH / THT / HTT
Out of all these outcomes, there are <u>3 ways</u>, we get exactly 2 Heads:
HHT / HTH / THH
So, the probability of exactly 2 coins landing on Heads is 3/8, or 0.375
Hey there! :)
6 = 1 - b
Like I mentioned in my previous answer, we must isolate our variable. In this case, our variable is b.
So, our first step is to subtract 1 from both sides.
6 - 1 = 1 - b - 1
Simplify.
5 = b
Therefore, b = 5
~hope I helped~
See picture for solution to your problem.
