Question

How many numbers formed with the digits
0, 1, 2, 5, 7, 8 will fall between 13 and 1000
if digits can be repeated?The no. formed can be of two digit and three digit .​

Answer 1

Answer:

207 numbers

Step-by-step explanation:

Two digits numbers starting with

2 , 5 , 7 , 8

1st Digit 4 Ways  , 2nd Digit 6 Ways

4 * 6 = 24

Two digits numbers starting with 1 greater than 13

15 , 17 , 18

3  

24 + 3 = 27   2 digit numbers

three digits numbers

1st Digit can be 5 Ways Except 0

2nd & 3rd Digit can be 6 ways each

5 * 6 * 6

= 180    3 digit numbers

180 + 27 = 207