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Probability
The probability of a certain event is a number expressing the likelihood that a specific event will occur, expressed as the ratio of the number of actual occurrences to the number of possible occurrences. In mathematics, it is a measure of how often an event will happen and is the basis of statistics.
14,643 Questions
How many ways can you arrange four books on a shelf using a diagram?
let a,b,c,d represent the 4 books
abcd, acbd, abdc, acdb, adbc, adcb, bacd, badc, bcad, bcda, bdac, bdca,
cabd, cadb, cbad, cbda, cdab, cdba, dabc, dacb, dbac, dbca, dcab, dcba
24 arrangements
answer can be found by multiplication
select 1st book -- 4 choices
2nd book -- 3 choices
3rd book -- 2 choices
4th book -- 1 choice
4x3x2x1 = 24
Math is something that you need everyday. For example when you go to the store and you are in the checkout. Math is used to find the total price of your purchace and the amount of change that you should be given. While you may not need trigonometry or calculus everyday math is what makes society go. you neeed math to complete every day things!!! Math is a complex science that is used in common everyday activities. Even if you are an athletic type and you think you do not need to use math, consider this. If you don't know math at all, you would not be able to count the number of goals/points scored in a game. Also, math is constantly running in the brains of superior individuals in society who consistently contrive to present their best to their communities. Math is the queen of all the sciences. It is also notably used in computing distances and times that it will take you to get to the places that you need to go.
What does COUNT IF function do?
Countif function counts cells containing data only when a certain condition is met.
Countif function looks like this =countif(range,criteria)
Range: the range we want to count.
Criteria: the criteria each cell must meet in order to be counted (if it contains data).
For example, let's say we have a list of stores with sales of an item and we want to know how many stores sold above 15 (note that 15 will not be counted only above it). We can use countif function and get the answer in a sec
My aunt and uncle grandpa and two sets of cousins are twins What are my chances of having twins?
There are two primary types of twins, Identical and Fraternal.
Identical twins occur when the egg splits after fertilization. To date no indication of a genetic link has been found.
Fraternal twins occur when more than one egg is dropped during ovulation. This trait can be inherited from the mother's side of the family. Studies have shown that the chances are also increased by being overweight or older.
Sounds like a good chance! You sound like my family LOL!
You would have too ask the person who set the exam. However - they don't HAVE to tell you.
It is possible because it has happened. My father had two brothers and three sisters.
None of them. The probability of an event cannot be greater than one. Besides, every leap year will have 366 days, not 53!
It is 1/12.
What is the probability of rolling three dice and getting a two a four and a six?
(1 in 6)3 or (1 in 216) or about 0.004630.
When you win a lotto is this an example of experimental or theoretical probability?
Neither. Experimental or theoretical probabilities are methods that may be used to determine the probability that a given set of numbers will win, whereas your winning is the outcome of the event.
Why is it easier to tip a full truck rather than an empty one?
The load in a full truck is mainly higher than the centre of gravity (COG) of the empty truck. As a result the COG of a full truck is higher. It is this than makes it easier to tip.
How many ways can a deck of 52 cards be divided into equal piles?
5 ways
the factors of 52 are 13, 2, and 2
a deck can be divided into 52 piles of 1, 26 piles of 2, 13 piles of 4, 4 piles of 13, and 2 piles of 26
How Is experimental different from theoretical?
Experimental: Studying something while doing it practically.
Theoretical: Studying something orally.
How can you predict the Numbers of times an event will occur?
An event occurs when the level comfort shifts to pain and the belief is one had to move. Yet movement and pain should not agree, so events take place when there is a urge to do or get something done. PROOF OF THIS IS A METHOD OF WATCHING THE WAY THE HEART PUMPS, THERE IS MOVEMENT THE HEARTS DOES BEFORE THERE IS AN ACTION OR EVENT EVEN IN LIFE OR PRESENTED TO ANY GIVEN PERSON. THERE IS ALSO A BOOK WRITTEN BY ME CALLED THE [] HEART.
What is probability that a leap years selected at random will contain 53 Sundays?
probability = 2/7
to be exact, 28/97 (about 28.87%)
What is the formula of a mean?
Obtain the arithmetic mean of a batch of numbers by adding them up and dividing by their count. For example, the arithmetic mean of 3, 5, and 10 equals (3 + 5 + 10)/ 3 = 6. There are other kinds of means, such as geometric and harmonic, but usually when the type of mean is not specified the arithmetic mean is intended. For completeness I will also provide an answer from probability theory. The mean of a random variable is its expectation, which is defined to be its integral. If the random variable has a distribution f(x)dx, its mean equals the integral of x*f(x)dx over all real numbers. This is related to the first definition of arithmetic mean. A batch of numbers gives rise to a random variable supported at those numbers, where the probability of each number is proportional to the number of times it occurs in the batch. (This is the empirical distribution function of the batch.) The arithmetic mean of the batch equals the expectation of that random variable.
What is the probability that a dime and penny are tossed in the air both that both land on heads?
One out of every four flips
If you roll a dice 60 times what is the probability that you will roll a 4?
Pr(You roll a four in 60 rolls) = 1 - Prob(No fours in 60 rolls)
= 1 - [Prob(Not 4 in a roll)]60
= 1 - (5/6)60
= 0.999982 ie 99.9982 per cent
Is the something wrong when you hear your heatbeat pulsate in your eardrum?
No, not normally. It will often depend on the position of your head. If it is bothersome, see a doctor, specifically an otolaryringologist.
