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the units place can have either 1,2 or 8

if the units digit has 1 or 2 there are only 3 different arrangements of the other places(because 8 is repeated)

if the units digit has 8 there are 6 different arrangements of the other places

6 8s in units place

3 1s in units place

3 2s in units place

6*8+3*1+3*2

57

the same can be said for digits of the other places as well

57*1000+57*100+57*10+57

62700+627

63327

answer is

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NPS Rajajinagar folks are rocking… Keep it up guys!!!

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