Could anyone please help with this Q.
Q.. last night I wrote down numbers from 1 to 99. I then re arranged them in alphabetical order. Which number did not move?
The ans given was 99 but I couldn't understand.
Any help on this please.
Thank you

Not sure whether this is meant to be a maths question but to me it seems ambiguous.

Are they looking for the numbers written as words, ie
one
two

...
ninety-nine

in which case my first response would be that obviously ninety-nine is not going to stay as the last one, it will be twenty-two (??)

So if you're putting the numerals in alphabetical order, I presume they mean (like on those drop-down with addresses when you put your postcode in....) look at the first digit, then order by the second digit, repeat for each 1st digit

1
10
11
12
13
14
15
16
17
18
19
2
20
21
....


9
90
91
.
.
.
99

However looked at like that, all the numbers in the 90s are in the same place, as is 1, so the answer given is not unique

Any other interpretations?

Sorry, my bad.
The given answer was 69 (option E). My son had marked Option A.
I was working on the same thing as writing them alphabetically as
Eight
Eighteen
Eighty-eight
Eighty-five
Eighty-four.... and so on but that sounded too difficult

I will post a picture as well. Here is the picture. It is Q 56

OK then. That seems pretty hard. I'm now going to type them all into a spreadsheet! See you later!

Update: yes it does work, but I would say that's hard to do with pencil & paper in a hurry: you'd have to sort into groups by first letters and make a cumulative total

Thank you very much