Question

to keep herself busy chitra wrote the number from 1 to 1,100.thow many digits did she write

Answer 1

help meh

Answer 2

how did you get that?

Answer 3

i dont know of an efficient way of doing this, but i would just do numbers 1 to 9, gives you 9 digits, 10 to 99 gives you 2(99-10) digits, 100 to 999 gives you 2(999 - 100) digits, etc

Answer 4

huh

Answer 5

....that last part is wrong...

Answer 6

100 - 999 don't have 2 digits...

Answer 7

yes your right sorry, 3(999 - 100)

Answer 8

better

Answer 9

sharigan, the numbers with two digits are between 10 and 99 right?

Answer 10

so there are 99 - 10 numbers with 2 digits

Answer 11

wats tha answer

Answer 12

work it out

Answer 13

89

Answer 14

yeah, so 89 numbers have 2 digits

Answer 15

hence 2(89) or 2(99 - 10) do you get it?

Answer 16

ya

Answer 17

:)

Answer 18

thanks