There are three numbers 8, 10 and 16, and then a number is added to make these four numbers proportion. This number can be ()

This number can be 20
8：10=16：20

RELATED INFORMATIONS

1. 1. There are () tens and () ones in 67; the number of 8 ones and 4 TENS is ()
2. What is the number of ten ones and one ten?
3. A number consists of three 1's, four 1 / 10's and six 1 / 1000's. what's the number
4. A number consists of six ones and two tens. This number is___ Its reciprocal is___ ．
5. The number of three ones and eight TENS is ()
6. The ratio of 0.125, 0.5, 2 and 8 is different______ And______ ．
7. 1.6, 6.4, 2 and 0.5 ()
8. Using 2594, choose three numbers to form the multiple of 3 and 9 respectively To all, to say those 9, those 3
9. 1 / 4 1 / 5 2.4 3 use these four numbers to form two proportions
10. Add three and two-thirds, 0.5 and 20% to form a ratio. The ratio is ()
11. The method of 24 composed of 8,10,12,8
12. The proportion of the following numbers is: a 0.6 1 / 4 1 / 5 0.75 B 1 / 4 7 1 / 8 1 / 14 C 3 21 34 46
13. The ratio of 21,3,7 / 8 and 0.125 were used to make up the ratio
14. Select nine numbers from the ten numbers of 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 to form a two digit number, a three digit number and a four digit number, so that the sum of the three numbers equals 2010, then the unselected number is______ ．
15. Take three different numbers from 1,3,5,7,9, and then take two different numbers from 0,2,4,6,8, to form five digits larger than 70123. How many are there
16. The ten numbers of 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 are composed of two 4-digit and one 2-digit Make two digits plus four digits equal to another four digits. More than ten digits must be used and can only be used once. Try to write ten different expressions
17. Use 2378 to form two two digit numbers to make their product maximum. What are the two two digit numbers? What is the maximum value?
18. Use the eight numbers 2, 3, 4, 5, 6, 7, 8 and 9 to form two four digit numbers. How to make the product of the two numbers maximum? Pay attention to the analysis process. OK, add money
19. The second power of 152 - the second power of 52 divided by the second power of 284 - the second power of 16 is in the form of fraction
20. Mathematics (4th power of a) + 6th power of a * 2nd power of a