Question

How many positive integers less than 4300 of digits 0-4. with basic information?

Answer 1

Answer:

575

Step-by-step explanation:

one digit no =4 (0 is not a positive integer)

two digit no=4*5=20

three digit no=4*5*5=100

four digit no=3*5*5*5=375 (the possibility for 1,2,3 will come in the first position)

four digit no=1*3*5*5 (the possibility of 4is fixed in the first position and then 0,1,2 is comes in second position)

and the last digit is 4300 we include this number also

Ans is 4+20+100+375+75+1=575