The no of nos lying between 10 and 1000 can be formed with the digits 2,3,4,0,8,9 is
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Step-by-step explanation:
it says that no of 2 digit numbers and 3 digit numbers can be formed
1st we see the no of 2 digit numbers
since we have 5x6=30 by the concept of permutations
and now the formation of 3 digit numbers
also we have 5x6x6=180
the first place of these digits can only fillen in 5 ways because 0 cannot be placed in this situation
since 210 numbers are lying between 10 and 1000
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