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what is the ratio of multiples of 3 between 1 and 100 to all numbers between 1 and 100
There are 720 of them. The three digit counting numbers are 100-999. All multiples of 5 have their last digit as 0 or 5. There are 9 possible numbers {1-9} for the first digit, There are 10 possible numbers {0-9} for each of the first digits, There are 8 possible numbers {1-4, 6-9} for each of the first two digits, Making 9 x 10 x 8 = 720 possible 3 digit counting numbers not multiples of 5.
25%
Multiples of 100 are numbers that can be divided evenly by 100. To find the multiples of 100 between 7806 and 8206, you need to find the smallest multiple of 100 greater than or equal to 7806 and the largest multiple of 100 less than or equal to 8206. The smallest multiple of 100 greater than 7806 is 7900, and the largest multiple of 100 less than 8206 is 8200. Therefore, the multiples of 100 between 7806 and 8206 are 7900, 8000, and 8100.
Numbers from 0 to 100 that are multiples of 10 are: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100. That's ten numbers, so the fraction of numbers from 1 to 100 that are multiples of 10 is 10/100. In simplest form it is 1/10.