2
Twice.
3
the answer is 135
266, 267, 268
4 x 578 = 2312 8 x 754 = 6032
2 is prime, its only factors are one and itself.
12
There are 900 three-digit numbers, ranging from 100 to 999.
0.12 Or 102 if you do not want to include non integers.
2087
196, 198, 202, 204
The smallest 3 digit counting number less than 1000?? 100
4*9 = 36 so 360 is one possible answer.