Solution:
We need to count from 170 - 410
We have many number of way to count from 170 - 410
But we will show a way only.
2 times count by 100 and 4 times count by 100
170 + 100 = 270 (Count by 100)
270 + 100 = 370 (Count by 100)
370 + 10 = 380 (Count by 10)
380 + 10 = 390 (Count by 10)
390 + 10 = 400 (Count by 10)
400 + 10 = 410 (Count by 10)
From 170 count 2 times 100 and 4 times 10 to get 410