Median is the middle number.
Rearrange the numbers to smallest to biggest.
70, 77, 80, _, 82, 87, 88
If the median of the data set is 81 the middle number needs to be 81.
So the missing number is 81.
70, 77, 80, 81, 82, 87, 88
Answer:
The records can be select in 332,640 ways.
Step-by-step explanation:
Consider the provided information.
There are 11 records to select from and a disc jokey can play 6 records.
Here, we need to find the number of permutation of n = 11 records taken r = 6 at a time.
Use the formula: 
Substitute the respective values in the above formula.




Hence, the records can be select in 332,640 ways.
Answer:80 or 1,071
Step-by-step explanation:
first you add 7+10=17 then you do 17x63=1,071
if its not times then the answer would b 80
Answer:
sorry i dont know it
Step-by-step explanation:
sorry