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The digits 1 through 9 are randomly arranged to make a number What is the probability that the resulting number is divisible by 18?
The answer is 4/9 or 44.444... % Any permutation of the digits 1 to 9 will be divisible by 9. So divisibility by 18 depends only on whether or not the last digit is even. If the last digit is 2, 4, 6 or 8 the number is divisible by 18 and if it is 1, 3, 5, 7 or 9 it is not. So 4 favourable outcomes out of 9 ie probability = 4/9.
How many circles can passes through three non-collinear points?
Exactly one. No more and no less.
What is the probability of rolling an even number on a number cube labeled 1 through 6?
1/2 - you have a 50-50 chance of rolling an even number (or an odd number for that matter !)
What is a net that has 2 circles and a rectangle?
A cylinder.
How do you get a perpendicular line?
To make perpendicular lines, draw a horizontal line. Then using a compass or tracing around the edge of a curved object, draw one circle ( or just a semi-circle) so that it crosses the horizontal straight line in at least one point. Now rotate the compass or move the curved object to draw another circle (or semi-circle). This second circle (or semi-circle) must cross through the horizontal straight line as the first one did. It also must cross through the first circle (or semi-circle) at two points- above the horizontal straight line and below the horizontal straight line. Next, draw a straight line from where the two circles (or semi-circles) meet above the horizontal straight line through to where they meet below the horizontal straight line. You now have a line perpendicular to the first line.
What is the probability of a prime number being picked randomly from the numbers 1 through 49?
There are 15 primes from 1 to 49 (including '1').The probability is (15/49) = 30.612 %(rounded)
What is the theoretical probability of getting a prime number if you randomly pick a number from 20 through 39?
There are 20 numbers from 20 through 39, and 4 of them are prime (23, 29, 31, 37), the probability is 4 in 20 or 0.20.
What is the probability of spinning a multiple of 3 on a spinner labled 1 through 10?
To calculate the probability of spinning a multiple of 3 on a spinner labeled 1 through 10, we first determine the total number of favorable outcomes. The multiples of 3 between 1 and 10 are 3, 6, and 9. Therefore, there are 3 favorable outcomes. Since there are a total of 10 equally likely outcomes on the spinner, the probability of spinning a multiple of 3 is 3/10 or 0.3.
Why is experimental probability called experimental probability?
Because it is the process of deriving probability through repeated experiments.
Can you give me a example of a sentence using the word randomly?
The names were chosen randomly out of a hat.She sprinkled salt randomly over the icy driveway.The dandelions are scattered randomly through the field.The coach chose the players randomly and not according to skill level.
Which parallel of latitude are great circles?
All parallels of latitude, except for the Equator, are not great circles. Great circles are the largest circles that can be drawn on a sphere and pass through its center, whereas small circles do not pass through the center of the sphere.
What is the definition of an event that has a probability of 1?
It's the probability that I will take another breath of air, or the probability that tomorrow will come, or the probability that the moon will go through all its phases for the next month.
What is the probability of winning a lottery in which you choose 4 numbers from the numbers 1 through 17?
The probability is 17C4 = 2380
When you drive to work the probability that you are stopped at traffic lights is 0.65 What is the probability that you can drive straight through?
It is 0.35.
What is the probability that two presidents will have the same birthday?
The probability, over presidents of all organisations, through all of time, is 1.
What is the probability of landing on number 4 if you spun a spinner numbered 1 through 4?
The probability is one in four, or 25%.
What can you do to get the experimental probability to be closer to the theoretical probability?
The experimental probability is figured out when a person goes through the trouble of actually trying it out. Theoretical probability is when a person comes to a conclusion of what is most likely, based off of the experiment results.
