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PostPosted: Sun Sep 08, 2019 5:22 pm 
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Joined: Mon Jan 28, 2019 11:48 am
Posts: 5
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


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PostPosted: Sun Sep 08, 2019 5:55 pm 
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Joined: Wed May 09, 2007 2:09 pm
Posts: 1146
Location: Solihull, West Midlands
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?


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PostPosted: Sun Sep 08, 2019 6:00 pm 
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Joined: Mon Jan 28, 2019 11:48 am
Posts: 5
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

Image

solimum wrote:
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?


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PostPosted: Sun Sep 08, 2019 7:50 pm 
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Joined: Wed May 09, 2007 2:09 pm
Posts: 1146
Location: Solihull, West Midlands
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


Last edited by solimum on Sun Sep 08, 2019 8:08 pm, edited 1 time in total.

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PostPosted: Sun Sep 08, 2019 7:56 pm 
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Joined: Mon Jan 28, 2019 11:48 am
Posts: 5
solimum wrote:
OK then. That seems pretty hard. I'm now going to type them all into a spreadsheet! See you later!

Thank you very much


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