Question

find the no. between 300 and 3000 whuch can be formed with the digit 0,1,2,3,4,5 ,no digit being repeated in any no.

Answer 1

3 digit numbers are

first place - 2
second place - 5
third place - 4
total=5*5*4= 100-1=99

4 digit numbers are

first place - 2
second place - 5
third place - 4
total= 40

total outcomes= 99+ 40=139