There are no three didgit numbers but there are 63 three digit numbers.
There are 192.
10999
∞ \ Infinite
The numbers that make up 170 is (0 + 0 + 1 + 2 + 67 + 60 + 27 + 12 + 1).
There are no three didgit numbers but there are 63 three digit numbers.
There are 192.
10999
∞ \ Infinite
144
The natural numbers, the negative natural numbers and 0 together make up the integers.
There are 99 numbers between 0 and 100.
There are infinitely many possibilities. But a simple pair to remember is 0 + 11349
The numbers that make up 170 is (0 + 0 + 1 + 2 + 67 + 60 + 27 + 12 + 1).
There are 5*4*3*2 = 120 such numbers.
15 prime numbers are between 0 and 50
Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.