They're palindromic. They read the same way backwards and forwards.
They're simply used for clarity - to make the number easier to read.
estimated
Three. All non-zero digits are significant, all zeroes between other digits, and all digits to the right of the decimal. The reason for this is that if this is rounded off, it apparently is rounded off to the nearest tenth, otherwise the tenth place would not be shown. if it were rounded off to the unit, it would read 39, not 39.0 ■
Estimated
A palindromic number is a number whose digits, with decimal representation usually assumed, are the same read backwards, for example, 58285.
The Cat Who Could Read Backwards was created in 1966.
The Cat Who Could Read Backwards has 256 pages.
They actually don't read backwards. The Japanese read from right to left because they write different than the people in the US. They probably think that we write and read backwards. It's kind of confusing.
flesruoy kcuf og (read backwards) flesruoy kcuf og (read backwards)
palindromes
No.
One. If you mean "digits", the number can have any amount of digits; the only requirement to be called a "palindrome" is that if you read it backwards, you get the same sequence of digits. Thus, any of the following is a palindrome: 1 (any 1-digit number is a palindrome), 55, 121, 2002, 12321, 600006, 8105018, ... As you can see, you can make them arbitrarily large.
It is called a semordilap which is backwards for palidromes. An example of a palidrome is kayak which is the same when read both forwards and backwards. An example of a semordilap is dog and G-d which use the same letters when read forwards or backwards but are obviously different words.
No
dyslexic
Read it backwards.