294
505
First add all the addition together and add all the subtraction together. Then there will be the total addition and the total subtraction. Subtract the total subtraction from the total addition.99+98-97+96-95+94-93+92-91+90=(99+98+96+94+92+90)-(97+95+93+91)=569-376=193
294
97 is a prime number. 98 and 99 are not.
294
505
First add all the addition together and add all the subtraction together. Then there will be the total addition and the total subtraction. Subtract the total subtraction from the total addition.99+98-97+96-95+94-93+92-91+90=(99+98+96+94+92+90)-(97+95+93+91)=569-376=193
294
100 + 99 + 98 + 2 + 1 + 0.3 = 300.3
1 + 98 = 99
98
1+3=4 4+5=9 9+.97=9.97 9.97+99=108.97
97 is a prime number. 98 and 99 are not.
The median for 85, 93, 95, 96, 98, 99, 100, 100 is 97. The number in the middle is 96, and 98. Add - 96 + 98 = 194 Divide - 194 ÷ 2 = 97
All but 97
Mean = 98 Median = 97 Modes = 95, 96, 97, 99 and 103 To those who would argue that there is no mode, the number 98, for example, was observed 0 times. Consequently, these five numbers appeared more often than 98.