Well....I am not going to tell you the answer but i will tell you this.. First number the numbers from least to greatest like this..... 1, 2,3 ,4...then if you have an even number of numbers the go to the middle and make to slashes like this......1,2)(3,4.... Then you go and add those 2 numbers in the middle together like this....2+3=5....Then you divide the sum by 2 because of the 2 numbers in the middle....IF you have an odd number of numbers like 1,2,3,4,5....then number them in order from least to greatest and then go to middle and you have the median.
23
24
21
21, 31, 31, 33, 34, 42 Mean: 32 Median: 32 Mode: 31
When put in order, the numbers are: 16, 18, 24, 25, 26, 27, 31, 32 and 2123. The median is the middle number, which is 26. If you mean the 2123 to be 21 and 23, then the numbers are: 16, 18, 21, 23, 24, 25, 26, 27, 31 and 32. In this case, there is an even amount of numbers, so the median is the value halfway between the two middle numbers. They are 24 and 25, so the median is 24.5 as your answer.
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
15
(5/31) / (15/23) = (5/31)*(23/15) = (5*23)/(31*15) = (1*23)/(31/3) = 23/93
13 15 17 19 21 23 25 27 29 31
19 You can do this on google by entering (15+23+31+15+11)/5
5/31 ÷ 15/23 = 23/93
Put them in order from least to greatest then find the middle number. In this case there are two 23 and 29 if you need one number I forget the formula, sorry.