Which number is not equal to one of the following expressions?

2,500 x 10

250,000 -: 100

2,500 -: 10

2 answers

What are your choices?
Which number is not equal to one of the following expressions?
0.5017 x 1000
501.7÷10501.7÷10
501.7÷1000501.7÷1000