If you flip a coin one time, the probability to get a Head is
p = 1/2
The probability of not getting a head in a single toss is :
q = 1 - 1/2 = 1/2
Thus there is only one unique situation to get the same number of heads and tails : in 10 toss you need to get exactly five heads, it will means that the rest is the tails.
Now using Binomial theorem of probability, the probability of getting exactly x = 5 heads in a total of n = 10 tosses is :
P(X = 5) =
≈ 0.246
So the probability of that is 24,6 %
Good Luck
66 elephants and 22 giraffes; 22x3= 66, 22+66= 88
Answer:
The correct option is B.
Step-by-step explanation:
The given expression is

Use the property of radicals.


Use the property of exponent.




Therefore option B is correct.
1/2 x 5/8 = .3125
If you plug it into the calculator.