491
First, take 137 ÷ 2 and you get 68.5. 68.5 is the average. What two numbers average 68.5, 68 and 69. The same two numbers equal 137.
197.254
2.5
287.3333
862 + 137 = 999
862+288=1150
2172 + 862 + 7979 = 11013
491
14
The result is: 328+137+90 = 555
863
862%:= 862/100 or 431/50 in fraction
Sum(not div by 7) = Sum(all) - Sum(div by 7) Now the sum of an AP is Sn = n/2 (first + last) where n is the number of terms Sum(All) = 10000/2 (1 + 10000) = 50005000 Sum(div by 7) = (9996/7)/2 (7 + 9996) = 1428/2 (10003) = 7142142 Sum(not div by 7) = Sum(all) - Sum(div by 7) = 50005000 - 7142142 = 42 862 858
It is: 862 = DCCCLXII
862
1, 2, 431, 862