SOLUTION: $n$ coins are simultaneously flipped. The probability that at most one of them shows tails is $\frac{3}{16}$. Find $n$.
Algebra.Com
Question 1117200: $n$ coins are simultaneously flipped. The probability that at most one of them shows tails is $\frac{3}{16}$. Find $n$.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
The probability of getting "r" tails when flipping "n" coins is
At most 1 tails means either 0 tails or 1 tails. So we have
That equation can't be solved algebraically; but simple enumeration finds that n is 5:
RELATED QUESTIONS
n coins are simultaneously flipped. The probability that at most one of them shows tails... (answered by robertb)
8 coins are simultaneously flipped. What is the probability that heads are showing on at... (answered by robertb)
six cions are flipped simultaneously. What is the probability that there are:
A) At... (answered by skippo)
six cions are flipped simultaneously. What is the probability that there are:
A.) At... (answered by Fombitz)
Four coins are flipped. What is the probability two are heads, given at least one is... (answered by Fombitz)
Two coins are tossed. what is the probability that the one coins shows heads if it is... (answered by math_tutor2020)
four coins are tossed simultaneously. what's is the probability of getting? 1 no heads 2... (answered by Fombitz)
In a class on probability, a lecturer flips two balanced coins. Both fall to the floor... (answered by Edwin McCravy)
Someone flips 15 biased coins once. The coins are weighted such that the probability of a (answered by solver91311)