If you can count from 1 to 100, then you can name them all. (And in numerical order, I might add.)
Add them up. 90, 91, 92, 93, 94, 95, 96, 98, 99, 100
100
All numbers from 1 to 100 which are whole numbers are integers
All you do is add all of the numbers 3 times and 1 an 9 4 times
If you can count from 1 to 100, then you can name them all. (And in numerical order, I might add.)
102*25=2550
100
int doSomebodysClassHomeworkForThem( ) { // Add all the numbers between 100 and 200 with a digit 5 in it return (105+115+125+135+145+150+155+165+175+185+195); }
5050
what is the ratio of multiples of 3 between 1 and 100 to all numbers between 1 and 100
Taking all the extreme numbers between 1 and 100 in each sum gives 1 + 100, 2 + 99, 3 + 98... and so on - fifty pairs of sums which add to 101. Therefore, the sum of the integers between 1 and 100 is equal to 50 x 101 = 5050.
Add them up. 90, 91, 92, 93, 94, 95, 96, 98, 99, 100
It's 2550
101
100
All numbers from 1 to 100 which are whole numbers are integers