Question

Number of 3-digit palindromes...

9 ways for the hundreds place.
9 ways for the tens place.
1 way for the ones place.

\(9 \times 9 \times 1 = 81\) which is wrong?

Answer 1

why is there only one way for the ones place?

Answer 2

shouldn't there be 9 ways?

Answer 3

you can have 9 in the first place, and 10 in the second place.

111 is also a palindrome.

Answer 4

Because the ones place is always equal to the hundreds place.

Answer 5

Oh yes!

Answer 6

010 is not a 3 digit number, but a 3 digit palindrome.

Answer 7

@LOOSEr I didn't consider 0 for the tens place, whoopies

Answer 8

so I would try it with 90

Answer 9

9*10*1=90

Answer 10

Yeah, that's right of course :-P

Answer 11

10 ways for tens place

Answer 12

^^