Which one of these four numbers is a palindrome both in ordinary decimal representation and in binary representation?
A palindrome is something that reads the same forwards and backwards.
The number 33 obviously reads the same forwards and backwards.
In binary representation the number 33 is represented as 100001. This also reads the same forwards and backwards.
But 11, although a palindrome in decimal representation is 1011 in binary (not a palindrome); so also 55 (which reads as 110111 in binary) and 77 (which reads as 1001101 in binary).
http://ascii.cl/conversion.htm
More Info:
ascii.cl
What are your thoughts on this subject?
59 Comments
Vicky Rosenberg
I figured since binary numbers are only composed of zeroes and ones, it had to be 11...none of the other numbers are binary
brezza marina
The writer forgot to explain the most important thing, how to write a number in binary form
Stephen Illich
I agree with Vicky Rosenberg
cathie
Michael Garmaise, ooh 😯
Player
Asked majority. They were not helpful.
Glynis Rix
No clue about all that!
Mario
I actually thought it was 11, lol.
Carla Stiver
I got it!
Caroline Gudgeon
Question poorly worded
james parrillo
David Holmes, I learned it at the time but have forgotten it, since I have never thought about it again. Thank you, Christine, James's wife
Richard Freeland
I guessed 33 but didn’t understand many words in the question.
Madeleine Cheesman
Huh? Neither the question nor the answer make sense to me. Oh well.
John Dommerman
Meanwhile back in Iowa....I got it wrong.
patrhea
I picked 11, and wrong along with many orhers.😁
John Edward Boyle
To some extent all our lives are influenced by binary and most don't understand it.