High school math formulas probability

Probability is the mathematical study of a special class of functions. Do you have all the formulas of probability? Below I share with you high school math formula probability, welcome to read.

High School Math Formula Probability

High School Math Probability Exercises

1, . In the case of 1,2,,3,? ,1000 any 1 of these 1000 integers, find the probability that it is divisible by 2 or 3.

2. It is known that the pass rate of English B level of students in a school is 95%, of which 70% of the Vu students pass the A level exam, try to find

the probability that a randomly selected candidate passes the A level exam.

3. Know. There are 3 winning tickets out of 10. Now 10 people will draw 1 ticket each, find:

(1) the probability that the first drawer will win the prize;

(2) the probability that the second drawer will win the prize.

4. A, B and C independently to decipher a ? Password, known as each person can translate the probability of 1/5,1/3,1/4, respectively, find the probability that the password was translated.

5. Throw a general seed four times in succession, find the probability of 2 points occurring in exactly 3 times:

6. A batch of products with a rate of more than 5 defective, from which any three pieces for inspection, one at a time, after inspection and put back, find:

(1) the probability that precisely one of the three pieces of defective products,

(2) the probability that all three pieces of genuine products;

(3) the probability that the three pieces of defective products is not more than one;

(4) the probability that there is at least one piece of defective products.

4., The probability p that a component will work properly is called the reliability of the component, and the probability that a system composed of components will work properly is called the reliability of the system. There are three elements according to the following two different ways of linking the two systems, if the reliability of each element that constitutes each system is r (0 < r < 1), and each element can work properly is independent of each other, find the reliability of each system.