Using only arrangements of the given digits:
without repeating digits, 15.
with repetition, 39.
The answer does not include numbers such as 2^3 = 8 or 3^(2+1) = 27
168 are.
One of them.
There are 168 prime numbers less than 1,000.
From 1 (inclusive) to 1000(inclusive,) 750.
Not including -integers or counting 1000, it would be 999. Counting 1000 it would be, well... 1000
858
11
950 to 999 would round to 1000 because 949 and less would round to 900.
130 numbers
Perfect squares have an odd number of factors. There are 31 perfect squares less than 1000.
1000.0
4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100 ............ on and on and on to infinity and beyond LOL !!!!!!!!!