There is an infinite number of numbers between 0 and 20.
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20 number
There are 9 prime numbers between 0 and 20: 1,2,3,5,7,11,13,17,19.
-16
since 648 = 2334 648 is divisible by any number that is 2x3y where x is between 0 and 3 and y is between 0 and 4. that gives you 20 possible answers.
NoAnswer:Adding 0 to number as in 2+0 does not change the number.Adding 0 toa number as in 2, 20, 200 ..... changes the number by 10 for each additional 0