Math brain teaser

[Umm_Maysa]

Ahmad is writing a book. He starts on page 1. When he finished, he uses a total of 228 digits.How many pages does he have?

 

[s_123_v]

is it 228

 

[Umm_Maysa]

Nope. try again . Read carefully . It says 228 digits not 228 pages.

 

[muslimahh]

184?? :d

 

[muslimahh]

184?? :d

WAIT! hehe 121!!

b.c. 9 (for page 1-9) = 9 pages
PLUS 90 pages (to total 99) x2 (180)
so thats 180+ 9 digits, i.e. 189 digits (we have 100 pages so far here)

then 228 - 189 = 39

39 divided by 3 (for the 3 digit numbers (100 onwards) = 13

so 9 pages + 99 pages +13 pages = 121 pages!!!

 

[muslimahh]

ergh sorry (no post editing, sorry for the million posts...trying to work this out

9 + 90 (not 99 whoops) + 13 = 112!!!

 

[sapphire]

i got 106

 

[afriend]

Good 1 but i'm terible at maths....so u can't really expect the answer from me.

Is it 28?

 

[Mainul_Islam]

WAIT! hehe 121!!

b.c. 9 (for page 1-9) = 9 pages
PLUS 90 pages (to total 99) x2 (180)
so thats 180+ 9 digits, i.e. 189 digits (we have 100 pages so far here)

then 228 - 189 = 39

39 divided by 3 (for the 3 digit numbers (100 onwards) = 13

so 9 pages + 99 pages +13 pages = 121 pages!!!

is THAT ([MOUSE]^^[/MOUSE]) suppose to be the brain teaser?! :-\ i dont understand a single thing u did!

lets see.. if he has 228 digits of pages.. then his # of pages is in the 100 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000th number

 

[Malaikah]

salam

when the question says digits, exaclty what is it refering to??

 

[Umm_Maysa]

Sister Muslimahh got it right masha Allah.. digits means the unit example 100 means 3 digit, so pages 100-105 means 3 x 6=18 digits
100, 101, 102,103,104,105

 

[nurah19]

asslamu alaikum i still don't get it where did u find this problem, never mind i am a history major not math

 

[Mainul_Islam]

wow... im impressed... some brains u got there!

*claps*

 

[muslimahh]

hehe Alahdulillahi Rabb-Al-Alameen,

JazakAllah bro Mainul_Islam,

Simple logic alhamdulillah...I actually failed math like crazy in high school hehe, steered clear of it in undergrad....I thought it was ironic I actually got it right heheh,

JazakAllah Khayr maysa for the brain teaser!! got anymore??

 

[*shamz*]

ergh sorry (no post editing, sorry for the million posts...trying to work this out

9 + 90 (not 99 whoops) + 13 = 112!!!

u are soooo clever im lost

 

[sapphire]

hmmmmmmmm........ok i lost 6 along the way i guess..........

 

[Mainul_Islam]

i got 112 straight away ! :-\

:shade:

but u didnt say anything so too bad

 

[hissa]

All this math hurts my brain...

 

[Mainul_Islam]

All this math hurts my brain...

too....much....to...handle!!!! :?

my head is gonna explode!!! AAAHHH!!! :enough!:

BOOM! :exhausted

 

[Umm Safiya]

I don't get it! :?