Question

How many number are their between 4,000 and 10,000 such that each digit in number is larger than digit on its left but its smaller than digit on its right?

Sample 4569
How many number?

Answer 1

Total of 14

Explanation:

so you want numbers like 4567 (smallest)

through 6789 (largest)?

4567, 4568, 4569

4578, 4579

4589

4678. 4679,

4789

5678, 5679

5689

5789

6789

Hope I was able to help!!