Correct Answer - Option 1 : 4

Hence, the correct answer is option 1.

If we multiply the digits within the, then we get

2 × 7 × 9 = 126

8 × 3 × 9 = 216

5 × 9 × 8 = 360

3 × 6 × 8 = 144

2 × 9 × 6 108

6 × 3 × 5 = 90

We can see, there are only 4 numbers whose digits’ multiplication is less than 200.