Seven ping-pong balls numbered 1-7 are put in a hat. Three balls are chosen without replacement. What is the probability that al
2 answers:
<h2>Answer:</h2>
The probability that all three numbers are even numbers is:
There are seven balls numbered as: 1-7
and the number of even numbers are: 3 ( i.e. 2,4 and 6 )
Three balls are chosen without replacement.
Hence, the probability that all three numbers are even numbers is given by:
Ratio of number of favorable outcomes to the total number of outcomes.
Hence, the probability is:
where the numerator represents that the balls drawn have even numbers.
and the denominator denote the choosing of 3 balls out of a total of 7 balls.
Hence, the probability is:
You might be interested in
So for this, you'll be using the pythagorean theorem, which is . In this case, 10 and 24 are the legs, and AB is the hypotenuse. Our equation will be
Firstly, solve the exponents:
Next, combine 100 and 576:
And lastly, square root both sides to get
And in short, Line AB is 26 ft, or the first option.