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?

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?

anonymous · Answer

why is there only one way for the ones place?

anonymous · Answer

shouldn't there be 9 ways?

anonymous · Answer

you can have 9 in the first place, and 10 in the second place.

111 is also a palindrome.

parthkohli · Answer

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

parthkohli · Answer

Oh yes!

anonymous · Answer

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

parthkohli · Answer

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

anonymous · Answer

so I would try it with 90

anonymous · Answer

9*10*1=90

parthkohli · Answer

Yeah, that's right of course :-P

anonymous · Answer

10 ways for tens place

anonymous · Answer

^^