Question

The no of nos lying between 10 and 1000 can be formed with the digits 2,3,4,0,8,9 is

Answer 1

Answer:

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