best to keep each digit at hundredth place(other than 0 and 9 as tenth place digit is more than that at hundredth place) .

for 1 --> total numbers will be 44

for 2 --> total numbers will be 42

for 3 --> total numbers will be 39

for 4 --> total numbers will be 35

for 5 --> total numbers will be 30

for 6 --> total numbers will be 24

for 7 --> total numbers will be 17

for 8 --> total numbers will be 9.

Hence, total will be 44+42+39+35+30+24+17+9 = 240

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