A, because: 20x10 1/2=210
And 20x11 1/4=225
And 225-210=15
So thats the answer.
Answer:
12354
Step-by-step explanation:
The smallest number with 12345 (I am assuming with out decimals) is
12345
If we switch the 5 and 4 we will get the second smallest number
12354