93
71 73 79 83 89 97.
71 73 79 83 89 97
It is: 89/99
19 between the two numbers.
51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, and 99.
That's an infinite list. 81, 83, 85, 87, 89, 91 and so on.
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
Place the values in ascending order: 76, 81, 89, 91, 97, 99. There are 2 middle numbers; 89 & 91. The median is the mean of the 2 middle numbers; or (89+91)/2 or 90.
89
The numbers 71, 73, 79, 83, 89 and 97 are prime.
The odd numbers between 86 and 100 are 87, 89, 91, 93, 95, 97, and 99. These numbers are not divisible by 2 and fall within the specified range.
71 73 79 83 89 97.
71 73 79 83 89 97.
71 73 79 83 89 97.
71 73 79 83 89 97
61, 67, 71, 73, 79, 83, 89, 97
If he wants a 90% average for the four tests, the least he can afford to get on thefourth one is 99%.(87 + 87 + 87 + 99) / 4 = 360/4 = 90%Good luck !