17, 28 or 39.
14, 25, 36, 47, 58 and 69.
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
111 numbers between 5 and 1000 are divisible by 9
There are 233 numbers between 1 and 700 that are divisible by three.
Leaving out decimal fractions, a transposition creates differences that are divisible by 9. Since 187 is not divisible by 9, a difference of 1.87 is not possible from a simple transposition.
17, 28 or 39.
14, 25, 36, 47, 58 and 69.
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
111 numbers between 5 and 1000 are divisible by 9
Their order is switched. For example, in the two numbers 12345 and 13245, the second and third digits are transposed.
There are 233 numbers between 1 and 700 that are divisible by three.
There are 2,966 numbers between 100 and 9,000 that are divisible by three.
There are 29 numbers between 1 and 150 that are divisible by five.
There are 22 numbers between 400 and 600 that are divisible by nine.
There are 89 numbers between 1 and 180 that are divisible by two.
There are 89,999 numbers between 100,000 and 999,999 that are divisible by 10.