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How many arrangements are there? 123 321 213 231 312 any more?
And 132
There are six
Arrange the natural numbers from 1 to 100 as shown in the figure on the right. In this table, use a rectangular box to make two lines of six numbers. If the box is formed, the sum of the six numbers is 123
So what's the maximum number
These six numbers are: 66 67 68 73 74 75 first of all, the title is two lines, so let one number be x, and the number of the next line is the corresponding big 7 X
Which of the three numbers 123 can be divided by 11?
121132231, just these three numbers
It is known that 123 () 4 is a multiple of 3. There are () ways to fill in the numbers in ()
It can be any one of 2,5,8. Check: if a number is a multiple of 3, then the sum of its digits is also a multiple of 3
RELATED INFORMATIONS
- 1. How many multiples of 3 are there from 3 to 123?
- 2. Python looks for all the integer multiples of another number in a range, and calculates how many multiples there are This is a problem. I really can't do it. I use Python 2.7. I want to use for loop 1) Create program count_ Multiple () which takes three non negative integers: base, start and stop, prints each integer multiple of base which occurs between start and stop (including start but not including stop) on a separate line, And returns the number of multiples found. If base = 3, there are two integer multiples between start = 9 and stop = 15, 9 and 12, but excluding 15. The east way to test while one number is an integer multiple of another is with the% operator \x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05 \x05\x05\x05\x05 \x05\x05\x05 \x05\x05 \x05\x05\x05 \x05\x05\x05\x05 \x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05 2）.Write a function user_ input_ multiples() which takes a single integer input base.This function will get start and stop values from the user with two calls to raw_ input(),call count_ multiples() to determine the number of integer multiples of base between the user specified start and stop,and then ask again for new start and stop values.The function will continue asking for new start and stop values until at least one of the following cases occurs: \x05\x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05\x05\x05 The user enters a negative value for start or stop. \x05\x05\x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05\x05\x05 The user enters a value for stop which is less than the value for start. \x05\x05\x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05\x05 \x05\x05\x05\x05\x05\x05\x05\x05\x05 The function count_ multiples() returns zero (eg:there were no multiples between start and stop). Once the function stops asking for input,it will return the total number of multiples found (the total over all calls to count_ multiples()). Hint:You will want to use a while loop for this function. English is a little too much. I'm a little annoyed. Please forgive me If you don't have time, give me a detailed idea or direction
- 3. If 1 = 5,2 = 12,3 = 123,4 = 1234, then 5 =?
- 4. The five digits 01234 can be used to form a five digit number without repetition Ask for explanation
- 5. Can a nine digit number composed of 1, 2, 3, 4, 5, 6, 7, 8 and 9 be prime?
- 6. A two - digit prime number whose single digit is 3 greater than that of a ten - digit number
- 7. 1+1-1+1-2+3-5+5-2+6-3+9+1-2+5-8+4+9-5+2+3-4+123-25+63+25-42+42-12+59-1+1008=?
- 8. The formula is 1 × 1 + 11 × 11 + 111 × 111 + 111… 111×111… The last three digits of the result of 111 (2010 1) are
- 9. (-123)×(-4)+125×(-5)-127×(-4)-5×75= It must be right, please
- 10. Key mathematical problems 123 1. Xiao Ming is making a model of the earth with a diameter of D meters: (1) how long does it take for him to surround the equator with a wire? (2) how long does it take to surround the equator if he wants to increase the radius of the model by M meters? (3) how long does it take to estimate a circle of wire for the equator of the earth? If he wants to increase the radius of the circle of wire by M meters So how long wire need to be added (the radius of the earth is about 6370km) (4) compare the results of (2) and (3), what do you find? Why?
- 11. To know that the greatest common factor of two numbers is 21 and the least common multiple is 123, how much is the sum of the two numbers? Wrong. The least common multiple is 126
- 12. What is the great common factor of 5 and 7
- 13. Is the greatest common divisor the greatest common divisor?
- 14. 3 is a factor, 18 is a multiple. Is it right or wrong
- 15. 2,4 / 3,6 / 7,8 / 13,10 / 21,..., then what is the nth number? (expressed by an algebraic expression containing n) Such as the title
- 16. There is a column of numbers as follows: 1,4 / 5,7 / 9,10 / 13,13 / 17,16 / 21. What is the 50th? What is the 100th?
- 17. 1.1.2.3.5.8.13.21.34. According to the characteristics of this column, what are the two numbers after the 34th number in turn
- 18. There is a column of numbers, 2, 5, 8, 11, 14 Then 104 is the () th number in this column A. 33B. 32C. 34D. 35
- 19. There is a column of numbers as follows: 4, 5, 9, 14, 23. What is the number 1999?
- 20. Fill in the blanks in the first day of junior high school! 1×2=1／3×1×2×3,1×2+2×3=1／3×2×3×4,1×2+2×3+3×4+4×5 =1／3×4×5×6,... According to the above rule, please guess: 1 × 2 + 2 × 3 + 3 × 4 +... + n (n + 1) (n is an integer)=------------- Very urgent ah, help, the right answer plus 50 points ah, speed!