From 1, 2, 3 In 2008, take any two numbers, then the sum of the two numbers is the probability of even numbers
Odd 1004
Even number 1004
Sum is even, two odd or two even numbers
Probability = [C (21004) + C (21004)] / C (22008)
RELATED INFORMATIONS
- 1. There are five numbers 1,2,3,4,5. If you want to find any two of them, the sum of them is the probability of even numbers
- 2. What is the probability that any one of the four numbers 0, 1, 2 and 3 is even?
- 3. Take any two numbers from the four numbers 1, 2, 3 and 4, and calculate the probability that one of the two numbers is odd and the other is even
- 4. The probability that any four out of ten numbers 0,1,2,..., 9 can be arranged into an even four digit number It can be repeated
- 5. In the ten natural numbers of 0.9, take any four different numbers to find the probability of forming a four digit even number
- 6. Take any four different numbers from 0123456789, and try to find the probability that they can be arranged into a four digit even number
- 7. From any three of the four numbers 0, 1, 2 and 3, the probability that the number arranged by the three numbers is three digits and even is obtained
- 8. Take any three of the ten natural numbers 1 and 2.10, then the largest of the three numbers is the probability of 3 When I figure it out, it's 1 / 20, but the answer is 1 / 120. Which one is right? Thank you
- 9. In the 10 natural numbers of 1,2,3... 9, take any 3 numbers, and find the probability that there are exactly two adjacent numbers in the 3 numbers
- 10. If three different natural numbers are given, the sum of two of them must be even. Why?
- 11. The sum of three consecutive even numbers is sixty. What are the three numbers
- 12. It is known that the largest number in seven consecutive even numbers is three times of the smallest number
- 13. There are 7 consecutive even numbers. The maximum number is 3 times of the minimum number. Find these 7 numbers
- 14. There are seven consecutive even numbers, of which the largest number is three times the smallest number. Find the first number
- 15. If there are three consecutive even numbers, and the smallest one is a, then the average of the three numbers is expressed as () A. aB. 2aC. a+2D. 3a+4
- 16. With 0, 1, 2, 3, you can set up () different even numbers
- 17. The sum of three consecutive even numbers is 10 greater than the largest one. The sum of these three consecutive even numbers is______ .
- 18. The sum of three consecutive even numbers is 60. What's the number in the middle
- 19. Starting from 2, add 101 addends, and find the sum of these even numbers
- 20. Starting from 2, continuous even numbers are added. The sum of them is shown in the following table Sum of addends (s) 1 2=1×2 2 2+4+6=2*3 3 2+4+6=12=3*4 4 2+4+6+8=20=4*5 5 2+4+6+8+10=30=5*6 According to the law of the above question: 102 + 104 + 106 + +The value of 2002 (writing process required)