Question

How many numbers between 100 and 1000 with at least one 6?

Answer 1

Answer:

252

Step-by-step explanation:

numbers between 100 and 1000, =900.

Numbers between 100 and 1000 which do not have digit 6 in any place,

= 8*9*9 =648.

Unit digit could take any value of the 9 values (0 to 9, except 6)

Tens Digit could take any value of the 9 values (0 to 9, except 6)

Hundreds digit could take any value of the 8 values (1 to 9, except 6)

numbers between 100 and 1000 which have at least one digit as 6,

= 900 −648 = 252.