70, 98.
There are four prime numbers between 50 and 100. They are 67, 71, 73, and 79.
50
50
50
64 and 81
only 50, 70, 98, and 100
The factors of 4900 between 50 and 100 are: 50, 70, 98, 100
4900 is divisible by 1, 2, 4, 5, 7, 10, 20, 25, 35, 49, 50, 100, 175, 245, 350, 700, 1225, 2450, 4900.
You can either just add them up or use quick logic to add them in pairs: All the numbers from 1 to 49 match up with 51 through 99 to = 49 pairs of 100 = 4900, than add the two you skipped 4900 + 50 + 100 = 5050 total
4900
There are four prime numbers between 50 and 100. They are 67, 71, 73, and 79.
It's simple: 1-49 matches up with 51-99 to add up to 100- 4900 50 100 5050 is the answer.
4950. If you add the pairs (1+99)+(2+98)... You get 100 for each pair. There are 49 pairs, and the 50 stands alone. So 4900 +50 is 4950.
These: 1 2 4 5 7 10 14 20 25 28 35 49 50 70 98 100 140 175 196 245 350 490 700 980 1225 2450 4900.
50
50
64 and 81