97
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114.
It is 81.5, the number halfway between the two middle numbers.
The square root of 99 falls between the whole numbers 9 and 10.Because 102 = 100and 92 = 8199 is between 81 and 100, so when you square root it, it falls between 9 and 10.
Starting with 85, if you add 7, you get 92. Then, if you increase the number you add by 3 each time, you would add 10 (7+3) to 92, resulting in 102. Continuing this pattern, you would add 13 (10+3) to 102, resulting in 115, and so on.
The answer is 92 because a rage is the difference between the greatest number and the smallest number. For this problem 105 is the greatest and 13 is the smallest.105 -13=92